Suppose you randomly select 40 participants,measure the length of each one's index finger,and also administer an IQ test to each.In this,you are investigating whether
A)there is a relationship between index fingers and IQ.
B)there is a relationship between length of index finger and IQ score.
C)long index fingers cause subjects to have high IQ scores.
D)IQ depends on length of index finger.

Question

Quizplus · Accepted Answer

The study is investigating whether there is a relationship between the length of the index finger and IQ score, which is represented by choice B. Option A is incomplete as it does not specify what the relationship is between index fingers and IQ, while option C and D are causal statements that cannot be proven by this study since it only measures the correlation between the two variables.

Suppose You Randomly Select 40 Participants,measure the Length of Each