The correlation between IMR and Socio Economic status is best dipicted by-: (A) Correlation (+1), (B) Correlation (+0.5), (C) Correlation (+2), (D) Correlation (-0.8)
Answer is D. 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 .