Dr. Carey gives a variety of achievement and aptitude tests to 1000 ten-year-old children from Southside Elementary School and 1000 ten-year-old children from Northside Elementary School. On average, the Southside students perform better on the tests than the Northside students. Dr. Carey concludes that teachers at Southside are superior to those at Northside. Is this conclusion warranted? Why or why not?
use this source: https://u1lib.org/book/19022432/1eab2a
