Calculating Degree Of Freedom In A Table

Q. The degree of freedom in a 4X4 table is

1. 4
2. 8
3. 9
4. 16

Answers is 3. 9

The degree of freedom in a table is calculated as
Degree of freedom = (r-1) X (c-1)
Where r= number of rows and c= number of columns
So (4-1) X (4-1) = 9 .

Correlation Between Variables

Q. Which of the following shows greatest correlation between variables ?

1. r= + 0.25
2. r= + 0.55
3. r= - 0.85
4. r= + 1.25

Answer is 3. r= - 0.85

The correlation in option no. 3 is very high, though it is negative correlation.


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