Question

There’s a positive correlation between the reading level of a child and how far they can jump.

Which variable is most likely the lurking variable that explains the correlation?



Responses

a age
a age

b math level
b math level

c number of siblings
c number of siblings

d number of pets

Answer 1

a. age

Older children tend to have higher reading levels and can jump farther (bigger, stronger, more coordination), so age is a plausible lurking/confounding variable causing the correlation.