Based on the S chart for a particular quantitative variable, which statement is

Question

Based on the S chart for a particular quantitative variable, which statement is FALSE? S Chart for Quant UCL CL LCL 1 4 7 10 14 18 22 26 30 34 38 Group Number of groups40 Center -2.055434 LCL 0 StdDev = 2.186665 UCL = 4.293797 Number beyond limits 3 Number violating runs = 0 O The S chart represents the variability within subgroups. The chart has at least one subgroup out of control O It is reasonable to use 3 in the control limit calculations, z 3 , for an chart for this data. ( The average standard deviation, 2.06

Explanation / Answer

The average standard deviation is = 2.1866

So 4th option is False

Option 1: .there is some variability within subgroups

Option 2: Some sample are out of the limits.

Option 3: This also true

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