Crankshaft movement data

A quality engineer at a plant that assembles automobile engines monitors the movement of crankshafts in the engines. In an operating engine, parts of the crankshaft move up and down a certain distance from the baseline position. The engineer took five measurements per day from September 28 through October 15 and then 10 per day from October 18 through 25.

You can use this data to demonstrate CUSUM Chart and Xbar-R Chart.

Worksheet column Description
A to B Distance The distance between the farthest position (A) and the baseline position (B)
Date The date when the measurement was taken
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