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Chapter 10-11

Department

Applied Math and StatisticsCourse Code

AMS 5Professor

Yonatan KatznelsonChapter

10-11This

**preview**shows page 1. to view the full**4 pages of the document.**AMS 5 Practice 8

4/18/2017

(8:00-9:05)

Chapter 10, #1, 2, 3, 5, 7, 9

1. Shown below is a scatter diagram for Math and Verbal SAT scores for graduating seniors

at a certain high school. Three areas are shaded. Match the area with the description.

(One description will be left over.)

(i) Total score (Math + Verbal) is below 800

(ii) Total score (Math + Verbal) is around 800

(iii) Math score is about equal to Verbal score.

(iv) Math score is less than Verbal score.

1a) i

1b) iii

1c) iv

2. In a study of the stability of IQ scores, a large group of individuals is tested once at age

18 and again at age 35. The following results are obtained.

age 18: average score ~ 100, SD ~ 15

age 35: average score ~ 100, SD ~ 15, r ~ 0.80

(a) Estimate the average score at age 35 for all the individuals who scored 115

at age 18.

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