1. Does the average IQ for residents of a state vary with the amount that the state spends on education? Seven of the 50 U.S. states were randomly selected. The amount that each spent per student (in thousands of dollars) and the average IQ for its residents were recorded. The data appear in the following table. Use SPSS to produce a correlation box along with a scatterplot (no regression line necessary) on the data to calculate the correlation coefficient to determine whether IQ varies with state spending on education.
Table: Average IQ by State
|
State
|
Spending per Student
|
Average IQ
|
|
Maryland
|
7.25
|
97.20
|
|
Idaho
|
4.21
|
99.90
|
|
Florida
|
5.72
|
96.10
|
|
New Hampshire
|
5.86
|
101.00
|
|
New York
|
9.62
|
97.80
|
|
Texas
|
5.22
|
97.20
|
|
North Dakota
|
4.78
|
101.40
|