Statistics & Research Methods (CBSE-NET (UGC) Psychology (Paper-II & Paper-III)): Questions 94 - 99 of 161

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Passage

A researcher wanted to study the effect of a specific drug on the activity of rats. He suspected if the effect of the drug is moderated by temperature. He varied drug dosage (A) at three levels-no drug (placebo), low drug dosage (5 mg/kg body-weight) and high drug dosage (10 mg/kg bodyweight). He varied temperature (B) at two levels – 25 degree Celsius and 39 degree Celsius. Fifteen rats were randomly assigned to each of the six groups. The activity scores for each rate were obtained through activity wheel. The cell means and standard deviations for activity scores were obtained for the six cells. All the cells had comparable standard deviations. A suitable analysis of variance was carried out using the activity scores as the dependent variable. One of the interesting finding in this research was that the F ratio defined as ‘MSA B/MSE’ was statistically significant at. 01 level.

(June 2014)

Question number: 94 (2 of 4 Based on Passage) Show Passage

» Statistics & Research Methods » ANOVA or F Test

Appeared in Year: 2014

MCQ▾

Question

What would be the degrees of freedom for error variance?

(June)

Choices

Choice (4) Response

a.

90

b.

89

c.

84

d.

83

Question number: 95 (3 of 4 Based on Passage) Show Passage

» Statistics & Research Methods » ANOVA or F Test

MCQ▾

Question

What would be the degrees of freedom for the interaction term?

Choices

Choice (4) Response

a.

2

b.

3

c.

5

d.

6

Question number: 96 (4 of 4 Based on Passage) Show Passage

» Statistics & Research Methods » ANOVA or F Test

MCQ▾

Question

Since the F ratio, defined as ‘MSA B/MSE’, is significant, it would be desirable to carry out

Choices

Choice (4) Response

a.

post-hoc comparisons for the three levels of A

b.

compute 3 2 multivariate ANOVA

c.

post-hoc comparison for the two levels of B.

d.

simple effects analysis

Question number: 97

» Statistics & Research Methods » Common Statistical Tests in Psychology

MCQ▾

Question

Test of ________ provide an estimate of how often experimental effects could have occurred by chance alone.

Choices

Choice (4) Response

a.

Probability

b.

Significant difference

c.

Statistical significance

d.

All of the above

Question number: 98

» Statistics & Research Methods » Measures of Variation

MCQ▾

Question

In measures of variability, when the scores are widely spread, this number, gets ________. When the scores are close together, it gets ________.

Choices

Choice (4) Response

a.

Smaller, smaller

b.

Smaller, larger

c.

Larger, smaller

d.

Larger, larger

Question number: 99

» Statistics & Research Methods » Inferential Statistics

MCQ▾

Question

When a correlation exists, we can say that ________.

Choices

Choice (4) Response

a.

Two variables are not related

b.

Two variables have cause and effect relationship

c.

Two variables are related

d.

All of the above

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