# Statistics & Research Methods-ANOVA or F Test (CBSE-NET (Based on NTA-UGC) Psychology (Paper-II)): Questions 1 - 6 of 12

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## Question number: 1

» Statistics & Research Methods » ANOVA or F Test

Appeared in Year: 2013

MCQ▾

### Question

What would be the degrees of freedom for error variance in a five group randomized ANOVA, with twelve subjects per group? (December)

### Choices

Choice (4) Response

a.

60

b.

55

c.

54

d.

59

## 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: 2 (1 of 1 Based on Passage) Show Passage

» Statistics & Research Methods » ANOVA or F Test

Appeared in Year: 2014

MCQ▾

### Question

From the above paragraph, it can be inferred that the assumption of homogeneity of variance

### Choices

Choice (4) Response

a.

suggests square root transformation of data in this case.

b.

cannot be evaluated in the absence of relevant data

c.

has been violated

d.

has been satisfied

## 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: 3 (1 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: 4 (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: 5 (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: 6 (4 of 4 Based on Passage) Show Passage

» Statistics & Research Methods » ANOVA or F Test

MCQ▾

### Question

From the significant F ratio, ‘MSA B/MSE’, it can be inferred that

### Choices

Choice (4) Response

a.

the main effect of drug dosage is significant

b.

the main effect of temperature is significant

c.

the effect of drug dosage is moderated by temperature

d.

the main effect of drug dosage, the main effect of temperature, and the interaction effect of the two, all are significant.

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