Tag: linear regression

Questions Related to linear regression

If the dependent variable increases as the independent variable increases in an estimating equation, the coefficient of correlation will be in the range of _________.

business economics and quantitative methods correlation analysis aspects of correlation scatter graphs and correlation linear regression

  1. 0 to (-) 1

  2. 0 to (-) 0

  3. 0 to (-) 0.05

  4. 0 to 1

Show answer
Correct Option: D

Karl Pearsons Coefficient of Correlation is also known as ______.

business economics and quantitative methods correlation analysis aspects of correlation scatter graphs and correlation linear regression

  1. simple correlation coefficient

  2. product moment correlation

  3. both A and B

  4. none of the above

Show answer
Correct Option: C

If the two regression coefficients are 0.8 and 0.2,then the value of coefficient of correlation is __________.

business economics and quantitative methods correlation analysis aspects of correlation scatter graphs and correlation linear regression

  1. -0.16

  2. -0.50

  3. +0.40

  4. -0.40

Show answer
Correct Option: C

Which of the following techniques are used for the study of correlation?

business economics and quantitative methods correlation analysis aspects of correlation scatter graphs and correlation linear regression

  1. Scatter diagrams

  2. Karl Pearsons coefficient of correlation

  3. Spearmans rank correlation

  4. All of these

Show answer
Correct Option: D

If two polynomial of the degree 7 and 4 respectively are multiplied, find the degree of the resultant polynomial

business economics and quantitative methods correlation analysis aspects of correlation scatter graphs and correlation linear regression

  1. 11

  2. -11

  3. 12

  4. 10

Show answer
Correct Option: A

Which of these is a Geometric series?

business economics and quantitative methods correlation analysis aspects of correlation scatter graphs and correlation linear regression

  1. 1,3,5,7,9........

  2. 2,4,8,16.........

  3. 3,2,4,5,1,3..........

  4. 1,3,4,7,6........

Show answer
Correct Option: B

A leading MNC operating in India has decided to reduce the work force in the ratio of 15:12 and at the same time increased the workers salary in the ratio of 18:21, the total wages likely to be affected by this proposed plan will be_____.

business economics and quantitative methods correlation analysis aspects of correlation scatter graphs and correlation linear regression

  1. total wages will go down in the ratio of 90:84

  2. total wages will go up in the ratio of 84:90

  3. total wages will go up by 5%

  4. no changes in total wages will

Show answer
Correct Option: A

If regression coefficient between x and y is -2/3, y on x is -1/6, the coefficient of correlation between x and y is_____.

business economics and quantitative methods correlation analysis aspects of correlation scatter graphs and correlation linear regression

  1. -3

  2. 1

  3. -1/2

  4. -1/3

Show answer
Correct Option: D

Estimate the value of coefficient of correlation between x and y if the two coefficient of regression are 0.64 and 1 :___

business economics and quantitative methods correlation analysis aspects of correlation scatter graphs and correlation linear regression

  1. 0.9

  2. 0.7

  3. 0.8

  4. 1.0

Show answer
Correct Option: C

The correlation coefficient is a measure of ________________.

business economics and quantitative methods correlation analysis aspects of correlation scatter graphs and correlation linear regression

  1. association

  2. location

  3. relative location

  4. variability

Show answer
Correct Option: B