Page 0015

Rule 3 - Number of Runs

Runs are a series of data points that fall

either above or below the median.

Are there too many or too few runs?

Disregard the points exactly on the

line. Tabled critical values are used to

determine if too many or too few runs

exist.

Note at least 10 data points are required

to use this rule.

Rule 4 - Astronomical point

A dramatically different value that

everyone reviewing the chart would agree

was extraordinary. This rule often applies

when improvement work has just begun

and the knowledge of what activity should

be undertaken is suddenly understood

and applied. It can lead to an instant

improvement.

1Source: IHI.org

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