Correlation in height & weight are measured by-: (A) Coefficient of variation, (B) Range of variation, (C) Correlation coefficient, (D) None
Answer is C. Ref:Parks 23rd edition pg 852 In order to find out whether there is significant association or not between the two variables , coefficient or Corelation is calculated . r lies between -1 and +1 r near -1 : indicates strong negative correlation . r = 0 : indicates no association r near +1: indicates strong positive correlation. Note: correlation does not necessarily prove causation . .