Last word studies indicate that married men on average earn more income than unmarried men of the same age and education level. why must we be cautious in concluding that marriage is the cause and higher income is the effect?

Which is relatively better: a score of 76 on a psychology test or a score of 22 on an economics test? scores on the psychology test have a mean of 90 and a standard deviation of 13. scores on the economics test have a mean of 52 and a standard deviation of 10.

Pedestrians,cyclists,skateboarders,and highway construction workers are know as?

Including place names directions and distances describe a route harriet tubman was likely to have followed from her slave home near bucktown to philadelphia