July 2012
Intermediate to advanced
352 pages
9h 30m
English
book
Common Errors in Statistics (and How to Avoid Them), 4th Edition
by Phillip I. Good, James W. Hardin
Content preview from Common Errors in Statistics (and How to Avoid Them), 4th Edition
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DESCRIPTIVE STATISTICS
Is all the necessary information present? Were measures of dispersion (variation) included as well as measures of central tendency? Was the correct and appropriate measure used in each instance: mean (arithmetic or geometric) or median, standard deviation or standard error or bootstrap CI?
Are missing data accounted for? Does the frequency of missing data vary among treatment groups?
Beware of graphs using arbitrary units or with misleading scales. Jean Henrick Schön, whose fraudulent reports wasted many investigators’ time and research monies, used such meaningless graphs with remarkable regularity [Reich, 2009].
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