1. 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 78 B 24 C 45 D 44 E 52 For the test errors, the c-chart with control limits that contain 99.73% of the random variation in test scores is: UCLc = ___ errors 2. LCLc = ___ errors 3. The process is in control when the number of errors is within the limits. According to the c-chart, there are ___ schools out of control.
1. 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 78 B 24 C 45 D 44 E 52 For the test errors, the c-chart with control limits that contain 99.73% of the random variation in test scores is: UCLc = ___ errors 2. LCLc = ___ errors 3. The process is in control when the number of errors is within the limits. According to the c-chart, there are ___ schools out of control.
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter14: Data Mining
Section14.2: Classification Methods
Problem 11P
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1. 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 78
B 24
C 45
D 44
E 52
For the test errors, the c-chart with control limits that contain 99.73% of the random variation in test scores is:
UCLc = ___ errors
2. LCLc = ___ errors
3. The process is in control when the number of errors is within the limits. According to the c-chart, there are ___ schools out of control.
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