Question

What is a requirement of the data collections process to be able to use a “run” chart?

Answer 1

Answer:

• During the data collection process, data must be taken over a reasonable period of time using a calibrated measurement tool that is being monitored with a calibration control chart. The measurement error study should validate the art of measuring the value of the method used.

• The data must be collected and stored in chronological or sequential order. You may start at any point in the data set and end at any point. To minimise the error and get the better results, at least 25 or more samples must be taken during the data collection such that variation of all the components are included and the amount of information in the data is very high. .

• Once the data have been collected in chronological or sequential order, they must be divided into ordered pairs of x and y values. The values for x represent time or sequence number, and the values for y represent the measurements taken from the product, service, or process.

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