SOFTWARE PROJECT MANAGEMENT
QUALITY MANAGEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A control chart shows seven data points in a row on one side of the mean. What should be done?
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Perform a design of experiments
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Adjust the chart to reflect the new mean
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Find an assignable cause
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Nothing. This is the rule of seven and can be ignored
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Explanation:
Detailed explanation-1: -Statistical Process Control (SPC) is a collection of statistical techniques aimed at identifying assignable causes of variations in a process by monitoring the process and analysing the data obtained.
Detailed explanation-2: -Trend – Seven or more consecutive points are increasing or decreasing. A basic rule of thumb is when a run chart exhibits seven or eight points successively up or down, then a trend is clearly present in the data and needs process improvement.
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