Statistics & Research Methods (CBSE-NET (UGC) Psychology (Paper-II & Paper-III)): Questions 83 - 87 of 161

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Question number: 83

» Statistics & Research Methods » Measures of Variation

MCQ▾

Question

Which is true about the range of the distribution?

Choices

Choice (4) Response

a.

It is a quick but gross description of the spread of scores.

b.

It can be used with other measures to calculate kurtosis.

c.

It provides a useful index of central tendency.

d.

It tends to be broader in nature than that of the “3 Tenors”.

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: 84 (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

Question number: 85

» Statistics & Research Methods » Inferential Statistics

MCQ▾

Question

Correlation can be expressed as a coefficient of correlation. This is simply a number falling somewhere between ________ and ________.

Choices

Choice (4) Response

a.

+1.00, -1.00

b.

+100, -100

c.

+. 99, -. 99

d.

+11.00, -11.00

Question number: 86

» Statistics & Research Methods » Measures of Variation

MCQ▾

Question

To obtain the ________, we find the deviation of each score from the mean and then square it. These squared deviations are then added and averaged.

Choices

Choice (4) Response

a.

Standard score

b.

Standard variance

c.

Deviation

d.

All of the above

Question number: 87

» Statistics & Research Methods » Inferential Statistics

MCQ▾

Question

Perfect correlation is 1.00 and a correlation of ________ occurs when scores are unrelated.

Choices

Choice (4) Response

a.

0.00

b.

0.11

c.

0.10

d.

0.01

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