Which type of correlation is indicated by the values of X and Y variables?
X : 30 35 40 50 55 GO
Y : 80 90 100 110 120 140
Here r = +1 as the values of X and Y variables move in the same direction.
The unit of correlation coefficient between height in feet and weight in kgs is:
The range of simple correlation coefficient is:
If rxy is positive the relation between X an Y is of the type:
If rxy = 0 the variable X and Y are:
Of the following three measures which can measure any type of relationship:
If precisely measured data are available the simple correlation coefficient is:
Why is r preferrred to co-variance as a measure of association?
Can r lie outside -1 and 1 range depending on the type of data?
Does correlation imply causation?
When is rank correlation more precise than simple correlation coefficient?
Mock Test Series
