A research chemist wants to understand how several predictors are associated with the wrinkle resistance of cotton cloth. The chemist examines 32 pieces of cotton cellulose produced at different settings of curing time, curing temperature, formaldehyde concentration, and catalyst ratio. The durable press rating, a measure of wrinkle resistance, is recorded for each piece of cotton.
You can use this data to demonstrate Fit Regression Model.
|Worksheet column||Description||Variable type|
|Conc||The setting of formaldehyde concentration||Factor|
|Ratio||The catalyst ratio||Factor|
|Temp||The temperature that the sample was exposed to||Factor|
|Time||The amount of time that the sample was exposed to test conditions||Factor|
|Rating||The rating of wrinkle resistance||Response|