The second central moment about the arithmetic mean is always equal to :
माध्य के परितः दूसरा केंद्रीय आघूर्ण (Second central moment) हमेशा किसके बराबर होता है?
Which of the following statements regarding correlation coefficient is true for data set $n(x, y)$?
निम्नलिखित में से कौन सा कथन सही है?
Practice official shift-wise question papers with answer keys and detailed explanations on the actual exam pattern.