Problem
The school board is trying to evaluate a new math program introduced to second- graders in five elementary schools across the
county this year. A sample of the student scores on standardized math tests in each elementary school yielded the following data:
| School |
No. of Test Errors |
| A |
52 |
| B |
27 |
| C |
35 |
| D |
44 |
| E |
55 |
a) Construct a c- chart for test errors, and set the control limits to contain 99.73% of the random variation in test scores.
b) What does the chart tell you?
(Please screen shot the excel if its in excel)