The National Assessment of Educational Progress (U.S. Department of Education) tests mathematics, reading, and science achievement in grades 4 and 8. A random sample of states is selected, and their mathematics achievement scores are noted for fourth- and eighth-graders. At α = 0.05 can a linear relationship be concluded between the data?

Perform these steps.
a. Find the Spearman rank correlation coefficient.
b. State the hypotheses.
c. Find the critical value. Use α = 0.05.
d. Make the decision.
e. Summarize the results.
Use the traditional method of hypothesis testing unless otherwise specified.

Transcribed Image Text:

Grade 4 89 8480 89 88 77 80 Grade 8 81 75 66 76 80 59 74