Statistics in a Nutshell

Errata for Statistics in a Nutshell

Submit your own errata for this product.


The errata list is a list of errors and their corrections that were found after the product was released. If the error was corrected in a later version or reprint the date of the correction will be displayed in the column titled "Date Corrected".

The following errata were submitted by our customers and approved as valid errors by the author or editor.

Color Key: Serious Technical Mistake Minor Technical Mistake Language or formatting error Typo Question Note Update



Version Location Description Submitted By Date Submitted Date Corrected
Printed
Page Index
United States

Omission of "error" and/or "residual error" from index. It is discussed as a topic in one specific occurrence on p.245.

Note from the Author or Editor:
Add "error of prediction" and "residual error" to the index, with reference to page 245.

Brian Joseph  Mar 23, 2014 
Printed
Page index
United States

Durbin-Watson is not in the index. I looked up autocorrelation but the D-W is not associated with it in the text. It is mentioned on pg. 203

Note from the Author or Editor:
Add "Durbin-Watson statistic" to the index, with a reference to page 203.

Brian Joseph  Mar 23, 2014 
Printed
Page 5
3rd line from the top

It should be noted that although many physical measurements are interval-level, should be read as It should be noted that although many physical measurements are ratio-level,

Note from the Author or Editor:
p. 5, 1st sentence of first complete paragraph should begin "It should be noted that although many physical measurements are ratio-level..."

Toshiaki Kurokawa  Oct 19, 2014 
ePub
Page 13
3rd paragraph

My page number is relative to my font size, but in the "The Focus of This Book" you'll find: "Several things are necessary to be able in the process of thinking with numbers."

Note from the Author or Editor:
please change sentence to read "Several things are necessary to be able to think with numbers."

Alfredo Delgado  Nov 30, 2012 
Printed
Page 22
1st Bullet in the last paragraph

• xis the number whose mean we are calculating. should be read as • xis the set of numbers whose mean we are calculating.

Note from the Author or Editor:
p. 22 fist bullet point following Figure 2-1 should read: "x is the set of numbers whose mean we are calculating." (with "x" in italics)

Toshiaki Kurokawa  Oct 16, 2014 
PDF, ePub, Safari Books Online
Page 54
Last two lines of "Independent and Dependent Variables"

In the closing sentences of the last paragraph of the section "Independent and Dependent Variables" the words indepenent and dependent have been described exactly the other way - at least if it should be consistent with the rest of the paragraphs idea.

Note from the Author or Editor:
on p. 54, the end of the last sentence of the paragraph beginning "Some researchers believe... " should read "thus, we will use "dependent variable" to identify the variables that reflect the outcome of a study and "independent variable" to mean the variables believed to influence the outcome."

Jakob Klein  Nov 17, 2012 
Printed
Page 69
United States

In the first sentence of the 5th paragraph it reads... "If we are evaluating the probability that the coin is fair.....give us strong evidence that it is fair. Should read ...."gives us strong evidence that it is unfair."

Note from the Author or Editor:
second paragraph fro the bottom, first sentence should end "that it is unfair"

Brian Joseph  Mar 23, 2014 
Printed, PDF, ePub, Safari Books Online
Page 91
First numbered list, item 3

Inconsistent with the item 1 (correct ranking from smallest to largest) in the instructions to compute the percentiles, the item 3 reads: "the (j+1)th largest measurement" should be used, while correctly it should be the (j+1)th smallest measurement, or more unambiguous, "the measurement ranked (j+1)th".

Note from the Author or Editor:
Affirmed; also notice plural for "observations": for item 3 in the first list on p. 91 (printed edition), the sentence should read: If (nk)/100 is not an integer, the kth percentile of the observations is measurement ranked (j + 1)th, where j is the largest integer less than (nk)/100.

Jakob Klein  May 26, 2013 
Printed, PDF, ePub, Safari Books Online
Page 92
2nd paragraph below the heading "The Variance and Standard Deviation"

The formula for the deviation is wrongly typeset, the index of x should be simply i and the subtraction should be on the first level (x_i - ) instead of (x_{i - }).

Note from the Author or Editor:
affirmed--in the formula in parentheses at the end of the first line, beginning "The deviation from the mean...., the symbol mu should not be subscript

Jakob Klein  May 26, 2013 
Printed
Page 127
United States

Fig 5-2 The chi square equation contains this product: i th row x j th row It should have: i th row x j th column

Note from the Author or Editor:
the numerator of the formula at the bottom of the page should read: ith row total times jth column total

Brian L Joseph  Sep 21, 2013 
Printed
Page 134
3rd paragraph, 3rd sentence

Fishers Exact Test for the data in Table 5-7 is 0.157. should be read as Fishers Exact Test for the data in Table 5-8 is 0.157.

Note from the Author or Editor:
p 134, paragraph before "McNemar's" header, 5 lines from the bottom: "Table 5-7" should be "Table 5-8"

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 138
2nd paragraph, 5th item in the formula explanateion

x bar is the pooled proportion, should be read as p hat is the pooled proportion,

Note from the Author or Editor:
p. 138, 5th line under Figure 5-12, should read: "p-hat is the pooled proportion..." (not "x-bar is the pooled proportion")

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 139
Figrue 5-15, denominator of the center

360+400+70+690 should be read as 360x400x70x690

Note from the Author or Editor:
p 139 Figure 5-15, denominator should be: sqrt(360x400x70x690) (replace + signs with multiplcation signs)

Toshiaki Kurokawa  Jun 11, 2014 
PDF
Page 141
Figure 5-19

The definition of r_{pb} in Figure 5-19 (point-biserial correlation coefficient) shows the numerator of the fraction as \bar{X}_{1}-\bar{X}_{0}\sqrt{p(1-p)} i.e. it indicates that only the X0 term is multiplied by sqrt{p(1-p)}. The example in Figure 5_20 indicates that the whole (X1 - X0) term which should be multiplied by sqrt{p(1-p)}. The definition in 5_19 could be amended to put brackets around the whole (X_1 - X_0) term.

Note from the Author or Editor:
For Figure 5-19 and F-20, the X-bar-sub1 minute X-bar-sub0 term should be in parentheses

Anonymous  Apr 05, 2014 
Printed
Page 157
3rd item from the top

s is the population standard deviation, should be read as s is the sample standard deviation,

Note from the Author or Editor:
p 157, 3rd line from the top, should read: "s is the sample standard deviation" not "population standard deviation"

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 157
3rd paragraph, 3rd sentence

with α= 0.05, we use the column for 0.25. should be read as with α= 0.05, we use the column for 0.025.

Note from the Author or Editor:
p 157, 2nd full paragraph, 7th line should read "we use the column for 0.025" not "for 0.25"

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 158
last sentence from the top

mathematically identical to the formula in Figure 6-4 but should be read as mathematically identical to the formula in Figure 6-5 but

Note from the Author or Editor:
p. 158 2nd line from the bottom, "..to the formula in Figure 6-4" should be "to the formula in Figure 6-5"

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 163
Figure 6-12

In the 2nd edition of Statistics in a nutshell, p163, Figure 6-12: The denominator's pooled variance reads 37.18 when it should read 31.78.

Note from the Author or Editor:
In Figure 6.12, in the denominator following the first = sign, replace 37.18 with 31.78 (the rest of the equation is correct)

Anonymous  Apr 23, 2014 
Printed
Page 184
3rd item from the top

SSxy is the sum of squares of x and y. should be read as SSxy is the sum of products of x and y.

Note from the Author or Editor:
p 184 3rd line from top, should read "SSxy is the sum of cross-products of x and y."

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 205
Figure 8-8

x-axis GIL should be read as GII

Note from the Author or Editor:
p 205 Figure 8-8 the label for the y-axis should be "GII" not "GIL"

Toshiaki Kurokawa  Jun 11, 2014 
PDF
Page 248
Figure 10-3

The label of the x-axis on Figure 10-3 appears to be incorrect/misleading. The label is "log_gni" (indicating that it is after a logarithmic transformation of GNI), but the graph title, and the explanatory text on page 247, indicate that Figure 10-3 is based on the raw GNI (i.e. before the logarithmic transformation), and that it is only Figure 10-4 which uses the logarithmic transformation. Consider relabelling the x-axis of Figure 10-3 as "gni" instead of "log_gni".

Note from the Author or Editor:
for Figure 10-3 on page 248 of the PDF, the x-axis should be labeled as GNI not log_gni

Anonymous  Apr 05, 2014 
Printed
Page 255
United States

"The Durbin-Watson statistic for this model is 0.195 very close to the null value of 2". Either the test statistic calculated is not the actual value which was calculated or the statement is incorrect based on the value of the stated test statistic.

Note from the Author or Editor:
In the first full paragraph, the value of the Durbin-Watson statistic should be 1.95, not 0.195.

Brian Joseph  Mar 23, 2014 
Printed
Page 255
United States

Omission: "We will evaluate the assumption of homoscedasticity....". The definition is not explained where it is referenced. It can not be found in the glossary or the index. The prior edition has the term in the index. It can be found on pg. 199

Note from the Author or Editor:
Third paragraph from the bottom, sentence beginning "We will evaluate the assumption..." add "(homoscedasticity means the variance is similar across the range of the data)" Add "homoscedasticity" to the index, referencing p. 255

Brian Joseph  Mar 23, 2014 
PDF
Page 256
Table 10-6 and preceding paragraph.

The values in this table are not consistent, and the text on interpreting Tolerance and VIF appears to reverse the terms. The text states that VIF = 1/tolerance, but the values appear to be approximately a factor of 10 out. (For example: in row "Log_gni", tolerance is 0.50 and VIF is 20.04, but 1/0.50 = 2.0, not 20.04.) Consider recalculating and correcting these. The text above the table states "tolerance should not be greater than 10 or VIF lower than 0.10". This is not consistent with other sources, or with this text's interpretation of the values in the table: the table shows low tolerances and high VIF, but the text states that there is a problem with the data. Consider replacing "tolerance should not be greater than 10 or VIF lower than 0.10" with "VIF should not be greater than 10 or tolerance lower than 0.10".

Note from the Author or Editor:
page 256, first paragraph, third sentence, second clause should be amended to read "one popular rules is that tolerance should not be less than 0.10 or VIF greater than 10." In Table 10-6, the tolerance values should be: 0.05, 0.02, and 0.08

Anonymous  Apr 05, 2014 
Printed
Page 257
Figure 10-10, caption

Figure 10-10. Histogram of standardized residuals for model 3 should be read as Figure 10-10. Scatterplot of standardized residuals for model 3

Note from the Author or Editor:
p. 257 Figure 10-10 caption should be "Scatterplot of standardized residuals for model 3"

Toshiaki Kurokawa  Oct 12, 2014 
Printed
Page 277
Table 11-4 rightmost two columns labels

In Table 11-4, the rightmost two columns' labels are: Lower Upper. This is a bit misleading, and they should be read as Lower Bound Upper Bound as was in Table 11-8, page 281 for clarification.

Note from the Author or Editor:
p. 277 Table 11-4 two columns furthest right should be labeled "Lower Bound" and "Upper Bound" [add "Bound"]

Toshiaki Kurokawa  Oct 08, 2014 
Printed
Page 281
Table 11-8, 2nd Column from left

Male=1 should be read as Male (3 occurrences)

Note from the Author or Editor:
p. 281 Table 11-8 2nd column change "Male = 1" to "Male" (occurs 3 times)

Toshiaki Kurokawa  Oct 08, 2014 
Printed
Page 284
1st sentence after Table 11-9

For the linear model Y= β0+ β1X1 + e, where Y is performance and x is caffeine, should be read as For the linear model Y= β0+ β1X1 + e, where Y is performance and X1(subscript) is caffeine,

Note from the Author or Editor:
p. 284 first sentence following Table 11-9, following comma, should read "where Y is performance and X1 is caffeine..." The 1 should be subscript to the capital X

Toshiaki Kurokawa  Oct 08, 2014 
Printed
Page 286
Table 11-12 1st line

The label, "Parameter estimates" should locate at the rightmost four columns, not the column with "Sig." which belongs to "Model Summary."

Note from the Author or Editor:
p. 286 Table 11-12 top line: "Parameter Estimates" should be located over the "Constant" column (not the "Sig" column)

Toshiaki Kurokawa  Oct 08, 2014 
Printed
Page 288
Table 11-13 rightmost two columns labels

In Table 11-13, the rightmost two columns' labels are: Lower Upper. This is a bit misleading, and they should be read as Lower Bound Upper Bound as was in Table 11-8, page 281 for clarification.

Note from the Author or Editor:
p. 288 Table 11-13 final two columns on right should be labeled "Lower Bound" and "Upper Bound" [add "Bound"]

Toshiaki Kurokawa  Oct 08, 2014 
PDF
Page 308
5th paragraph

The word "Because" is misspelled as "Bacause".

Note from the Author or Editor:
The sentence should read "Because there are both...

Duncan Aitken  Dec 06, 2012 
Printed
Page 312
1st Paragraph, 1st sentence, between Fig. 13-4 and Fig. 13-5

In this formula, W is the smaller of the two rank sums, µW is the expected sum of ranks as calculated previously, and σW is the standard error, calculated as shown in Figure 13-5. should be read as In this formula, W is the smaller of the two rank sums, µW is the expected sum of ranks as calculated previously, and σW is the standard deviation, calculated as shown in Figure 13-5.

Note from the Author or Editor:
P. 312 sentence following Figure 13-4, should read as follows: "In this formula, W is the smaller of the two rank sums, µW is the expected sum of ranks as calculated previously, and σW is the standard deviation, calculated as shown in Figure 13-5."

Toshiaki Kurokawa  Oct 05, 2014 
Printed
Page 317
3rd paragraph 3rd sentence (From the bottom, 2nd paragraph, 2nd sentence)

The measurement of interest in this particular study is a 100-point measure of mood state in which 0 is very low affect, and 10 is very high affect. should be read as The measurement of interest in this particular study is a 100-point measure of mood state in which 0 is very low affect, and 100 is very high affect. The scale is 100 instead of 10.

Note from the Author or Editor:
p. 317 3rd sentence of 3rd paragraph, beginning "The measurement of interest" the end should read "and 100 is very high affect." (not "and 10 is very high affect").

Toshiaki Kurokawa  Oct 05, 2014 
Printed
Page 341
Last paragraph, 1st sentence

No particular pattern in the data is presented in Figure 14-14 should be read as No particular pattern in the data is presented in Figure 14-13

Note from the Author or Editor:
p. 341 last paragraph, change reference to Figure as follows: "No particular pattern in the data is presented in Figure 14-13..."

Toshiaki Kurokawa  Oct 04, 2014 
Printed
Page 357
1st line from the top

Even though hospital 1 had more postsurgical infections in the period studied, these should be read as Even though hospital 1 had less postsurgical infections in the period studied, these

Note from the Author or Editor:
p. 357 first line should begin "Even though hospital 2 had more..." (not "hospital 1 had more...")

Toshiaki Kurokawa  Sep 28, 2014 
Printed
Page 359
Paragraph after Table 15-5, 1st sentence

The parenthesized part of "Looking at the age distribution and age-specific rates for the employed versus unemployed populations, we see that for each age group, the rates of arthritis are somewhat higher in the unemployed group than in the employed group (the opposite pattern from that seen when data from all the age categories is combined)." that is, " (the opposite pattern from that seen when data from all the age categories is combined)" seems not true at the last row of Table 15-5. Either this should be deleted or revised to be precise.

Note from the Author or Editor:
p. 359 paragraph following Table 15-5, first sentence, should read "Looking at the age distribution and age-specific rates for the employed versus unemployed populations, we see that for each age group, the rates of arthritis are only slightly higher in the unemployed as compared to the employed group, with the exception of the 65+ group.

Toshiaki Kurokawa  Sep 29, 2014 
Printed
Page 397

Caption, Figure 16-12. Calculating the coefficient of equivalence should be read as Figure 16-12. Calculating the estimated reliability from the coefficient of equivalence

Note from the Author or Editor:
p. 397 change caption for Figure 16-12 to "Calculating the estimated reliability from the coefficient of equivalence"

Toshiaki Kurokawa  Sep 23, 2014 
Printed
Page 398
1st Figure

Caption, Figure 16-13. An alternative formula for the coefficient of equivalence should be read as Figure 16-13. An alternative formula for the estimate of reliability from the coefficient of equivalence

Note from the Author or Editor:
p. 398 caption 16-13 change to: " An alternative formula for the estimate of reliability from the coefficient of equivalence"

Toshiaki Kurokawa  Sep 23, 2014 
Printed
Page 400
3rd line from the top

With the line, is the total variance for the test (usually estimated by s2 x. we need missing closing parenthesis, and the right form for s (subscript x) (superscript 2 meaning square of (sx))

Note from the Author or Editor:
p. 400 3rd line from the top needs closing parenthesis just before the period, and the subscript x should be directly below the square sign (as in the sigma-hat-sub-x-squared) at the beginning of this line)

Toshiaki Kurokawa  Sep 24, 2014 
Printed
Page 421
2nd paragraph, 3rd sentence or 7th line

Something wrong with the sentence: "Value labels are assigned to variable labels but are assigned to the values of individual variables." Perhaps, it can read as "Value labels are assigned to the values of individual variables."

Note from the Author or Editor:
p. 421 2nd paragraph 7th sentence from the top should read: "Value labels are assigned to the values of individual variables."

Toshiaki Kurokawa  Sep 08, 2014 
Printed
Page 422
String and Numeric Data, 1st paragraph, 4th sentence

"the coding systems most commonly used are EBCDIC (Extended Binary Coded Decimal Interchange Code) and ASCII (American Standard Code for Information Interchange). " is misleading and/or obsolete. We should include Unicode rather than EBCDIC, especially for PC and Web environments and places other than United States.

Note from the Author or Editor:
p. 422 3nd paragraph edit the phrase in question as "the coding systems most commonly used are Unicode and ASCII (American Standard Code for Information Interchange)."

Toshiaki Kurokawa  Sep 09, 2014 
Printed
Page 474
United States

3 + 5 + 8 -3 + -5 = -8 should be 3 + 5 = 8, -3 + -5 = -8 -3 + 5 = 2 3 + -5= -2 should be -3 + 5 = 2, 3 + -5 = -2

Note from the Author or Editor:
p. 474, 4 lines from the bottom, indented, should read: 3 + 5 + 8 and -3 + -5 = -8 (add word "and" between 8 and -3) p. 474, final line, indented, should read: -3 + 5 = 2 and 3 + -5 = 2 (add word "and" between 2 and 3)

Glen Leatherman  Oct 06, 2013 
Printed
Page 474
4th line from the bottom, or the 2nd formula from the bottom

3 + 5 + 8 −3 + −5 = −8 should be read as 3 + 5 = 8, −3 + −5 = −8

Note from the Author or Editor:
p. 474, 4th line from the bottom, should read: 3 + 5 = 8, -3 + -5 = -8 last line should read: -3 + 5 = 2, 3 + -5 = -2

Toshiaki Kurokawa  Jun 10, 2014 
Printed
Page 476
4th bullet from the bottom

The multiplicative identity of 0: any number times 0 = 0: should be read as The zero element of 0: any number times 0 = 0:

Note from the Author or Editor:
p. 476 5th bullet: change "the multiplicative identity of 0" to "the zero property of multiplication"

Toshiaki Kurokawa  Jun 10, 2014 
PDF
Page 479
4th bullet point

"b^{log_b x} where x > 0" should read "b^{log_b x} = x where x > 0".

Note from the Author or Editor:
The sentence should read: "b^{log_b x} = x where x > 0"

Duncan Aitken  Apr 24, 2013 
Printed
Page 479
4th bullet

b to the log base b of x where x > 0 should be b to the log base b of x = x where x > 0 Add '= x'

Note from the Author or Editor:
p. 479 4th bullet from the top: add "= 0" after "b to the log base b of x "

Glen Leatherman  Oct 06, 2013 
Printed
Page 479
last bullet in Solving Equations

If c ≠0, should be read as If a= b and c ≠0,

Note from the Author or Editor:
p. 479, 4th bullet under the header "Solving Equations" should begin: "If a = b and c NE 0, then a/c = b/c... (use not-equals sign for NE)

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 481
6th paragraph

Substitute this value into the first equation to solve for y: should be read as Substitute this value into the solution for y from the first equation: the equation given is the value for y, not the first equation itself, so I changed the explanation. We can change the equation as well, though.

Note from the Author or Editor:
p 481 6th paragraph, beginning "Substitute this value into the first..." should read "Substitute this value for x into the solution for y:"

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 483
4th problem under Linear (In)equalities

an equality for x should be read as an inequality for x

Note from the Author or Editor:
On p. 493, the heading "Linear Equalities" 2/3 down the page should read "Linear Inequalities" 4th problem under this header should read "Solve down to an inequality for x" (not an equality for x)

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 485
Figure A-11

= 3 should be read as = -3

Note from the Author or Editor:
p 485 equation A-11; answer is -3 not 3

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 485
Last formula

−y1= 4 − 6 = −2 y1= 2 should be read as −y1= 4 − 6 = −2, y1= 2

Note from the Author or Editor:
the formula at the bottom of the page should read: y-y1=m(x-x1); 6-y1=2(6-4); -y1=12-8-6; -y1=-1; y1=2 (with subscripts for the 1 in y1 etc. and normal spacing for an equation)

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 495
2nd subheading

Exponents, Roots, and Logarithms should be read as Exponents and Roots

Note from the Author or Editor:
p. 495 second header should read "Exponents and Roots"

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 496
1st subheading

Natural Logarithms should be read as Logarithms

Note from the Author or Editor:
p. 496 1st heading should be "Logarithms" not "Natural Logarithms"

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 497
1st subheading

Linear Equalities should be read as Linear Inequalities

Note from the Author or Editor:
p. 497 first heading should be "Linear Inequalities" not "Linear Equalities"

Toshiaki Kurokawa  Jun 11, 2014 
Printed
Page 510
1st paragraph, 3rd sentence of Microsoft Excel

The link (http://www.daheiser.info/excel/frontpage.ht) does not have proper information. the link was changed or lost the information.

Note from the Author or Editor:
substitute the URL http://www.statisticalengineering.com/Weibull/excel.html for http://www.daheiser.info/excel/frontpage.ht on the 8th line of the first Excel paragraph, p. 510

Toshiaki Kurokawa  Jun 14, 2014 
Printed
Page 527
3rd paragraph, last sentence

http://www.math.unb.ca/~knight/utility/ Not Found the link maybe obsolete.

Note from the Author or Editor:
at end of 3rd paragraph,in the final sentence, remove the text "and are available..." to the end of the sentence. (refers to Knight's website, which no longer exists)

Toshiaki Kurokawa  Jun 16, 2014 
Printed
Page 527
4th line from the bottom

in a discrete distribution, a point (such as 2.00) has no area should be read as in a continuous distribution, a point (such as 2.00) has no area

Note from the Author or Editor:
Sentence should read "in a continuous distribution" (not "discrete distribution")

Toshiaki Kurokawa  Jun 17, 2014 
Printed
Page 534
3rd paragraph, 3rd sentence

http://www.math.unb.ca/~knight/utility/ Not Found the link maybe obsolete.

Note from the Author or Editor:
Remove the text "; the complete tables are available" to the end of the sentence.

Toshiaki Kurokawa  Jun 17, 2014 
Printed
Page 541
5th bullet from the top

http://www.math.unb.ca/~knight/utility/ Not Found the link maybe obsolete.

Note from the Author or Editor:
remove this bullet point: the web page no longer exists

Toshiaki Kurokawa  Jun 18, 2014 
PDF
Page 543
Table F-1, The Greek Alphabet

The lowercase pi is incorrect. The text shows a lower case delta (δ) instead of a lower case pi (π).

Note from the Author or Editor:
On p. 543, the lowercase letter for pi is incorrect. It should be π

Anonymous  Oct 15, 2013 
ePub
Page 1276
Last equation in Figure A-15

In a series of examples of dividing out common factors to simplify fractions, (4x^3y^2)/(2xy^3) is said to reduce to 2xy^-1 instead of 2x^2y^-1.

Note from the Author or Editor:
the second equation in Figure A-15 (p. 487 in the pdf) should solve to 2x^2y^-1 in other words, it should be x-squared rather than x in the solution

Alfredo Delgado  Dec 03, 2012 
ePub
Page 9922
3rd paragraph

3 + 5 + 8 − 3 + − 5 = − 8 should read 3+5=8, -3+-5=-8

Note from the Author or Editor:
p. 474 in PDF, equations in 4th from last line, and last line, need commas to clarify, and 4th from last line subsitute an = for the 3rd +. They should read: 3 + 5 = 8, -3 + -5 = 8 3 + 5 = 2, 3 + -5 = 2

David Graham  Apr 04, 2014 
ePub
Page 10167
Figure A-13

m = 6-0/0-2 = 6/-2 = 3 should be m=6-0/0-2 = 6/-2 = -3

Note from the Author or Editor:
in PDF p. 485, Figure A-11, answer should be -3 not 3

David Graham  Apr 04, 2014 
ePub
Page 10215
Figure A-18

4(x*3)(y**2) / 2(x)(y**3) = 2(x**2)(y**-1)

Note from the Author or Editor:
in PDF, p. 487 Figure A-15, solution to second equation should be: 2x**2y**-1 In other words, x-squared not x

David Graham  Apr 04, 2014