A researcher wants to know if older siblings have greater motivation to succeed than their younger siblings. The researcher asks a group of 50 sibling pairs how motivated they are to succeed on a scale of 1-7. As discussed in lecture, what would be the best first step in calculating an inferential statistic?

options

Calculate the standard deviation for older siblings.

Calculate the mean for younger siblings.

Calculate the mean for older siblings.

Subtract the motivation of younger sibling from the other (older sibling).