# Statistics & Research Methods (CBSE-NET (Based on NTA-UGC) Psychology (Paper-II)): Questions 135 - 138 of 184

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## Question number: 135

» Statistics & Research Methods » Inferential Statistics

MCQ▾

### Question

A ________ finds the degrees of correlation, or relationship, between two existing traits, behaviors or events.

### Choices

Choice (4) Response

a.

Factor analysis

b.

Correlational study

c.

Analysis of variance

d.

Question does not provide sufficient data or is vague

## Question number: 136

» Statistics & Research Methods » Basic Descriptive Statistics

MCQ▾

### Question

Histograms are made by labeling class intervals on ________ and frequencies on the ________.

### Choices

Choice (4) Response

a.

Abscissa, ordinate

b.

Horizontal lines, vertical lines

c.

Abscissa, Ordinate and also horizontal and vertical lines

d.

Question does not provide sufficient data or is vague

## Question number: 137

» Statistics & Research Methods » Inferential Statistics

Appeared in Year: 2015

MCQ▾

### Question

A fifth test was added to an old established selection test battery of four tests. Two multiple correlations, one between a suitable external criterion and three tests of the old battery, and the other between the same criterion and four tests of the new battery were computed. The significant change is R 2 would provide an evidence for the:

### Choices

Choice (4) Response

a.

Predictive validity of the old battery

b.

Incremental validity of the fifth test

c.

Predictive validity of the new battery

d.

Concurrent validity of the fifth test

## Question number: 138

» Statistics & Research Methods » Regression Analysis

Appeared in Year: 2015

MCQ▾

### Question

Which of the following statements are true about simple bivariate linear regression? (June)

(a) The b coefficient is a slope of the regression line.

(b) The b coefficient denotes change in Y, when X changes by 1 Unit.

(c) The error of prediction has a mean and variance of zero.

(d) If the b coefficient is significant, the product moment correlation between X and Y is also significant

### Choices

Choice (4) Response

a.

a, b and d

b.

c and d

c.

a, b and c

d.

a and b

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