CORRELATION MATHEMATICS AND QUESTION ANSWERS

correlation problems & solutions

1. CORRELATION

2. Karl Pearson's co-efficient of correlation :
Let X and Y be given random variables. The Karl Pearson's co-efficient of correlation
is denoted by r
XYor r(X, Y) and defined as

3. Calculate the correlation co-efficient for the following heights (in inches) of fathers X and
their sons Y.

6. RANK CORRELATION
REPEATED RANKS
correction factor

8. Ten participants were ranked according to their performance in a mustical test by
the 3 Judges in the following data.