Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Education Research in Education Measurement and Analysis of Data
The formula for the calculation of point biserial correlation is:
1
\(\rm r_{pbis}=\frac{M_p-m_q}{\sigma}\times\sqrt{(p.q)} \)
2
\(\rm p_{pbis}=\frac{R-w}{(N+1)(R+W)}\)
3
\(\rm r_n=\frac{nr_n^{'}}{1+(n-1)r^{'}_n}\)
4
\(\rm r_{bis}=\frac{M_p-m_q}{\sigma}\times\left(\frac{p.q}{y}\right) \)