Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Business Statistics and Research Methods Correlation and regression of two variables
The probable error of the coefficient of correlation (r) is calculated by which one of the following formulae?
1
\(0.6745\;\sqrt {\frac{{1 - {r^2}}}{n}} \)
2
\(0.6745\frac{{\left( {1 - {r^2}} \right)}}{{\sqrt n }}\)
3
\(0.6745\frac{{1 + {r^2}}}{{\sqrt n }}\)
4
\(0.6745\frac{{\left( {1 + {r^2}} \right)}}{n}\)