Construct an $R$ chart and determine whether the process variation is within statistical control.

A machine that is supposed to fill small bottles to contain 20 milliliters yields the following data from a test of 4 bottles every hour.

Question

Construct an $R$ chart and determine whether the process variation is within statistical control.
 
A machine that is supposed to fill small bottles to contain 20 milliliters yields the following data from a test of 4 bottles every hour.

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The Answer of Construct an $R$ chart and determine whether the process variation is within statistical control.
 
A machine that is supposed to fill small bottles to contain 20 milliliters yields the following data from a test of 4 bottles every hour.

Construct An RRR Chart and Determine Whether the Process Variation Is Within Statistical

Construct An $R$ Chart and Determine Whether the Process Variation Is Within Statistical