To begin the analysis, from the menus choose:

Analyze
 Descriptive Statistics
  Explore...

step Select Degrees Centigrade as the dependent variable.

step Select Alloy as the factor variable.

step Label cases by labrunid.

step Click Statistics.

Because the heat-resistant properties of premium bearings are unknown, robust estimates of central tendancy and a table of outliers should be requested.

step Select M-estimators and Outliers.

step Click Continue.

step Click Plots in the Explore dialog box.

You should also request tests of normality for these data. These tests will be calculated individually for each alloy.

step Select Normality plots with tests.

step Click Continue.

step Click OK in the Explore dialog box.