Calculate the mean and standard deviation for each group from the data below.
ID
Gender
Psychological skill
Performance score (out of 10)
1
Male
Imagery
7
2
Male
Imagery
5
3
Male
Imagery
4
4
Male
Imagery
4
5
Male
Imagery
5
6
Male
Imagery
5
7
Male
Imagery
5
8
Male
Goal setting
8
9
Male
Goal setting
10
10
Male
Goal setting
7
11
Male
Goal setting
6
12
Male
Goal setting
10
13
Male
Goal setting
5
14
Male
Goal setting
5
15
Female
Imagery
7
16
Female
Imagery
7
17
Female
Imagery
7
18
Female
Imagery
4
19
Female
Imagery
6
20
Female
Imagery
7
21
Female
Imagery
6
22
Female
Goal setting
7
23
Female
Goal setting
10
24
Female
Goal setting
7
25
Female
Goal setting
10
26
Female
Goal setting
8
27
Female
Goal setting
10
28
Female
Goal setting
9
Gender
PST
Mean(SD)
Male
Imagery
Male
Goal-Setting
Female
Imagery
Female
Goal-Setting
ANSWERS
Male
Imagery
5(1)
Male
Goal-Setting
7(2)
Female
Imagery
6(1)
Female
Goal-Setting
9(1)
If the equation for the above study was: score = (b0 + b1PSTi + b2genderi + b3interactioni)+Ei, how would you express the interaction effect between the PST and the gender?
A. PST × gender
B. PST + gender
C. PST / gender
D. PST – gender
Answer: A
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