Define and explain the differences between cross-sectional, successive independent samples, and longitudinal designs.

Pkease ! what are a few reasons why the south seceded from the union

Why is the road most slick when it first begins to rain? a. oils the road has absorbed begin to float. b. the water has not had time to run off. c. a higher concentration of dirt makes the road more slick. d. none of the above

Assume you wanted to save 2000 to buy a used car 18 months from now. how much money do you need to save every week to accomplish your goal?