Correlation Practice Questions

 

1 Mark questions

 

  1. Give the meaning of correlation.

 

  1. What is absence of correlation?

 

  1. What is scatter diagram?

 

  1. What does it mean if the correlation between two variables is + 1?

 

  1. What is positive correlation?

 

4 Mark questions

 

  1. Calculate Karl Pearson’s coefficient of correlation from the following:-

X: 1      2            9            8           10         11         13         7

Y: 1      4            8            6              9            11         12          3

 

  1. Calculate Karl Pearson’s coefficient of correlation from the following :-

Marks in Accountancy:  48   35          17          23          47

Marks in stratified:                  45          20          40          25          45

 

  1. Calculate Karl Pearson’s coefficient by actual mean method

X :          8           4            10          2            6

Y:           9            11          5           8            7

 

  1. Obtain rank correlation from the following

X:           88         70          75          60          95          81          50          80

Y:           134       115       120       110       150       142       100       140

 

  1. Calculate rank correlation Price of

tea:                               55          50          75          55         60          65          50         65          70                50

Price of Coffee:                            140       110       160       110       115       115       125       120                115       130

Leave a Reply

Your email address will not be published. Required fields are marked *