Statistics in Psychology
Section – A (450 Words)
Q. No. 1. Define and differentiate between Parametric and non-parametric statistics 4+6 Marks
Q. No. 2. Explain step by step the calculation of point Biserial correlation and phi coefficient and indicate their uses 5+5 Marks
Q. No. 3. Explain linear and non-linear relationship. Find out the degree of relationship between the 2 data given below using Spearman’s Rho. 3+7 Marks
|
|
A
|
B
|
C
|
D
|
E
|
F
|
G
|
H
|
I
|
J
|
|
Data 1:
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22
|
23
|
29
|
20
|
25
|
27
|
30
|
34
|
37
|
35
|
|
Data 2:
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35
|
39
|
22
|
40
|
31
|
45
|
30
|
28
|
25
|
20
|
Q. No. 4. A research was carried out to find the effectiveness of three techniques of stress management. The data collected from three different groups on stress scale are given below. Find out using ANOVA, if the obtained differences are significant.
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Group A (Technique 1):
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2
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4
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5
|
6
|
7
|
|
Group B (Technique 2):
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3
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2
|
3
|
2
|
4
|
|
Group C (Technique 3):
|
3
|
6
|
2
|
4
|
7
|
Critical values: 0.05 level of significance = 19.41
0.01 level of significance = 99.46 10 Marks
Section – B (250 Words)
Q. No. 5. Describe the four levels of measurement and indicate the data for which they are used 6 Marks
Q. No. 6. Compute Mann Whitney ‘U’ test for the following data: 6 Marks
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Data 1:
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10
|
24
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14
|
15
|
30
|
17
|
29
|
|
Data 2:
|
20
|
12
|
16
|
18
|
36
|
38
|
50
|
Q. No. 7. For question ‘How often do you exercise?’, the replies given by males and females were categorized as frequently, occasionally, rarely and never. Is there any association between gender and frequency? 6 Marks
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Frequently
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Occasionally
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Rarely
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Never
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Males
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10
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5
|
4
|
6
|
|
Females
|
20
|
10
|
3
|
2
|
Critical Value: for 0.01 level of significance = 11.345
for 0.05 level of significance = 7.815
Q. No. 8. Compute Kendall’s tau for the following data: 6 Marks
|
|
A
|
B
|
C
|
D
|
E
|
|
X
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4
|
7
|
8
|
9
|
3
|
|
Y
|
3
|
4
|
7
|
8
|
9
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Q. No. 9. Describe the properties of Normal Probability Curve 6 Marks
Section – C (100 Words)
Q. No. 10. Errors in Hypothesis testing 3 Marks
Q. No. 11. Correlation and Causality 3 Marks
Q. No. 12. Interactional effect 3 Marks
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