Construct a c-chart for test errors and set the control

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Reference no: EM1389688

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

Construct a c-chart for test errors, and set the control limits to contain 99.73% of the random variation in test scores. What does the chart tell you? Has the new math program been effective?

Reference no: EM1389688

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