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Test: Correlation And Regression- 3 - CA Foundation MCQ


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30 Questions MCQ Test - Test: Correlation And Regression- 3

Test: Correlation And Regression- 3 for CA Foundation 2024 is part of CA Foundation preparation. The Test: Correlation And Regression- 3 questions and answers have been prepared according to the CA Foundation exam syllabus.The Test: Correlation And Regression- 3 MCQs are made for CA Foundation 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Correlation And Regression- 3 below.
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Test: Correlation And Regression- 3 - Question 1

The regression lines are identical if r is equal to

Detailed Solution for Test: Correlation And Regression- 3 - Question 1

The two lines of regression coincide i.e. become identical when r = –1 or 1 or in other words, there is a perfect negative or positive correlation between the two variables under discussion.

Test: Correlation And Regression- 3 - Question 2

The regression lines are perpendicular to each other if r is equal to

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Test: Correlation And Regression- 3 - Question 3

Feature of Least Square regression lines are——— The sum of the deviations at the Y’s or the X’s from their regression lines are zero.

Test: Correlation And Regression- 3 - Question 4

The coefficient of determination is defined by the formula

Test: Correlation And Regression- 3 - Question 5

The line Y = 13 –3X /2 is the regression equation of

Test: Correlation And Regression- 3 - Question 6

In the line Y = 19 – 5X/2 , byx is equal to

Test: Correlation And Regression- 3 - Question 7

The line X = 31/6 — Y/6 is the regression equation of

Test: Correlation And Regression- 3 - Question 8

In the equation X = 35/8 – 2Y/5, bxy is equal to

Test: Correlation And Regression- 3 - Question 9

The square of coefficient of correlation ‘r’ is called the coefficient of

Test: Correlation And Regression- 3 - Question 10

A relationship r2 = 1 — 580 is not possible 300

Test: Correlation And Regression- 3 - Question 11

Whatever may be the value of r, positive or negative, its square will be

Test: Correlation And Regression- 3 - Question 12

Simple correlation is called

Test: Correlation And Regression- 3 - Question 13

A scatter diagram indicates the type of correlation between two variables.

Test: Correlation And Regression- 3 - Question 14

If the pattern of points ( or dots) on the scatter diagram shows a linear path diagonally across the graph paper from the bottom left- hand corner to the top right, correlation will be

Test: Correlation And Regression- 3 - Question 15

The correlation coefficient being +1 if the slope of the straight line in a scatter diagram is

Test: Correlation And Regression- 3 - Question 16

The correlation coefficient being –1 if the slope of the straight line in a scatter diagram is

Test: Correlation And Regression- 3 - Question 17

The more scattered the points are around a straight line in a scattered diagram the _______ is the correlation coefficient.

Test: Correlation And Regression- 3 - Question 18

If the values of y are not affected by changes in the values of x, the variables are said to be

Test: Correlation And Regression- 3 - Question 19

If the amount of change in one variable tends to bear a constant ratio to the amount of change in the other variable, then correlation is said to be

Test: Correlation And Regression- 3 - Question 20

Variance may be positive, negative or zero.

Test: Correlation And Regression- 3 - Question 21

Covariance may be positive, negative or zero.

Test: Correlation And Regression- 3 - Question 22

Correlation coefficient between x and y = correlation coefficient between u and v

Test: Correlation And Regression- 3 - Question 23

In case ‘ The ages of husbands and wives’ ———— correlation is

Test: Correlation And Regression- 3 - Question 24

In case ‘Shoe size and intelligence’

Test: Correlation And Regression- 3 - Question 25

In case ‘Insurance companies’ profits and the no of claims they have to pay “——

Test: Correlation And Regression- 3 - Question 26

In case ‘Years of education and income’———

Test: Correlation And Regression- 3 - Question 27

In case ‘Amount of rainfall and yield of crop’——

Test: Correlation And Regression- 3 - Question 28

For calculation of correlation coefficient, a change of origin is

Test: Correlation And Regression- 3 - Question 29

The relation rxy = cov (x,y)/sigma x* sigma y is

Test: Correlation And Regression- 3 - Question 30

A small value of r indicates only a _________ linear type of relationship between the variables.

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