The Following Data Reflect the Number of Customers Who Test

question 1

Multiple Choice

The following data reflect the number of customers who test drove new cars each day for a sample of 20 days at the Redfield Ford Dealership. Given these data,what is the variance?

• A)0.69
• B)Approximately 3.08
• C)Approximately 9.52
• D)Approximately 181

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Definitions:

P Chart

A type of control chart used for monitoring the proportion of defective items in a sample over time in quality control processes.

Sample Proportion

The fraction or percentage of the sample that has a particular trait or characteristic of interest.

Control Limits

Statistical boundaries in process control that indicate the acceptable range of process variation.

Centerline

The midpoint value in a control chart that represents the average performance of the process being studied.