Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Business Statistics and Research Methods Correlation and regression of two variables
Study the following information:
Covariance between X and Y series = -17.8
Standard deviation of X series = 6.6
Standard deviation of Y series = 4.2
No. of pairs of observation = 20
The coefficient of correlation is
1
-0.642
2
0.642
3
0.253
4
-0.253