A teacher wanted to see if his gifted and talented students truly performed better than average on a standardized academic test. Use the data from the x3cell above to represent the teacher's gifted and talented students' scores on the standardized test. The dependent variable was the number of points earned out of twenty possible. The populational mean (μ) is a score of 7.

Testing Format

x1: True/False

x2: Multiple Choice

x3: Essay

Test Scores

x1 Data

x2 Data

x3 Data

9, 4, 5, 8, 4, 6

∑x3 =

(∑x3)2 =

∑x32 =

M3 =

SS3 =

df3 =

s3 =