Q. The school board is trying to evaluate a new math program introduced to second-graders in five elementary schools across the county this yr. A sample of the student scores on criterion zed math tests in each elementary school yielded the following data:
A 52
B 27
C 35
D 44
E 55
Construct a c-chart for test errors also set the control limits to contain 99.73percent of the random variation in test scores. Illustrate what does the chart tell you?