Question: Consider the following data table, Subgroups Quality characteristic 1 12 11.5 11 11 2 10.3 11.3 11.3 11.1 3 10.5 11.5 12 10.5 4 10

Consider the following data table,

Subgroups

Quality characteristic

1

12

11.5

11

11

2

10.3

11.3

11.3

11.1

3

10.5

11.5

12

10.5

4

10

9.7

10.5

10.9

5

10

8.8

10

10.3

6

9.5

9.6

10.1

10.2

7

9.6

10

10.9

10.3

  1. Design X-bar and R control charts.
  2. Determine, whether the process is in-control or not.

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