Week 9 Chapter 11

Question 1

X2 - X1 (2 and 1 are subscripts)

Answer 1

formula for difference scores

Question 2

√((s^2)/n)

Answer 2

formula for estimated standard error

Question 3

(MD - μD)/sMd (Note: D is subscript. Md is subscript of s)

Answer 3

formula for repeated-measures t statistic

Question 4

repeated-measures design

Answer 4

strategy in which two sets of data are obtained from the same group of participants

Question 5

difference score

Answer 5

measurement obtained by subtracting the first score from the second score for each person

Question 6

estimated standard error for MD

Answer 6

figure computed using the sample variance (or sample standard deviation) and the sample size

Question 7

repeated-measures t statistic

Answer 7

calculation based on difference scores, rather than raw scores

Question 8

individual difference

Answer 8

characteristic that varies from one individual to another

Question 9

order effect

Answer 9

change in score caused by participation in an earlier treatment

Question 10

matched-subjects design

Answer 10

strategy in which individuals in one sample are paired with individuals in another sample