# Statistics in Psychology

posted by
**Jessica** on
.

19. You measure how much people are initially attracted to a person of the opposite

sex and how anxious they become during their first date. For the following ratio

data, answer the questions below.

Participant Attraction X Anxiety Y

1 2 8

2 6 14

3 1 5

4 3 8

5 6 10

6 9 15

7 6 8

8 6 8

9 4 7

10 2 6

(a) Compute the statistic that describes the relationship here. (b) Compute the

linear regression equation. (c) What anxiety score do you predict for a person

who has an attraction score of 9? (d) When using this relationship, what is the

“ average” amount of error you should expect in your predictions?

20. (a) For the relationship in question 19, what is the proportion of variance accounted

for? (b) What is the proportion of variance not accounted for? (c) Why or

why not is this a valuable relationship?