Select the option that best describes your data.

Complete the following steps if the measurement data for an Xbar-R chart are in one column.

- From the drop-down list, select All observations for a chart are in one column.
- Enter one or more columns of measurement data. If you enter more than one column, Minitab creates a separate Xbar-R chart for each column.
- In Subgroup sizes, do one of the following:
- If all subgroups are the same size, enter the subgroup size (for example, 5).
- Enter a column of values that identifies which subgroup each measurement is from.

In this worksheet, Measurements contains the measurement data. Subgroup identifies which subgroup each measurement is from.

C1-T | C2 |
---|---|

Subgroup | Measurements |

One | 10 |

One | 13 |

One | 10 |

Two | 8 |

Two | 8 |

Two | 9 |

Complete the following steps if each row in the worksheet contains the measurement data for one subgroup.

- From the drop-down list, select Observations for a subgroup are in one row of columns.
- Enter the columns that contain the measurement data.

In this example, Measurement_1, Measurement_2, and Measurement_3 contain the measurement data. The data for subgroup 1 are in row 1, the data for subgroup 2 are in row 2, and so on.

C2 | C3 | C4 |
---|---|---|

Measurement_1 | Measurement_2 | Measurement_3 |

10 | 13 | 10 |

8 | 8 | 9 |