Complete the following steps to specify the columns of data that you want to analyze.

- In Responses, enter one or more columns of numeric data that you want to explain or predict. The response is also called the Y variable.
- In Continuous predictors, enter the columns of numeric data that may explain or predict changes in the response. The predictors are also called X variables.
- In Categorical predictors, enter the categorical classifications or group assignments, such as a type of raw materials, that may explain or predict changes in the response. The predictors are also called X variables.

In this worksheet, Strength is the response and contains the strength measurements of a sample of synthetic fibers. Temperature is a continuous predictor and Machine is a categorical predictor. The predictors may explain differences in fiber strength. The first row of the worksheet shows that the first sample of fiber has a strength measurement of 40, has a temperature of 136, and was produced on Machine A.

C1 | C2 | C3 |
---|---|---|

Strength | Temperature | Machine |

40 | 136 | A |

53 | 142 | A |

32 | 119 | B |

36 | 127 | A |

42 | 151 | B |

45 | 121 | B |