Exercises

Mix and Match

Match each description on the left with the correct graph or equation on the right, taking into account all the items on pages 588 and 589 also.

1. Straight enough to fit a line

(a)

A normal quantile plot and a histogram.
2. Not straight enough to fit a line

(b)

A residual plot in which the data are widely distributed around the trend line
3. Similar variances

(c)

A residual plot in which the data curve upward.
4. Not similar variances

(d)

5. Nearly normal

(e)

6. Not nearly normal

(f)

7. Average of y given x in the SRM (g) ...

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