ANOVA --one factor Getting the ANOVA Table
  1. Enter the values into one column and then list the levels of the factor in the next column. Your worksheet should look like this.
 
14.1 Imperial
13.6 Imperial
14.4 Imperial
14.3 Imperial
12.8 Parkay
.
.
.

 
  1. Go to Stat, Basic Statistics, ANOVA, One Way. The following screen should appear.
  1. Enter the values into the Response box and enter the columns with the level names under Factor.
  2. Hit O.K. You should get the following output.
One-way ANOVA: Values versus Levels

Analysis of Variance for Values
Source     DF        SS        MS        F        P
Levels      5   108.185    21.637    79.26    0.000
Error      20     5.459     0.273
Total      25   113.645
                                                     Individual 95% CIs For Mean
                                                           Based on Pooled StDev
Level       N      Mean     StDev      ---------+---------+---------+-------
Blue Bon    4    13.825     0.443             (--*--)
Chiffon     4    13.100     0.594          (--*-)
Fleischm    4    18.100     0.648                                                   (--*-)
Imperial    4    14.100     0.356                (--*-)
Mazola      5    17.140     0.598                                           (--*-)
Parkay      5    12.800     0.430        (-*-)
                                                      ---------+---------+---------+-------
Pooled StDev =    0.522                            14.0      16.0      18.0
 

Computing Multiple Comparisons
 

  1. Go back to Stat, ANOVA, One way. Complete the screen as you did above.
  2. Click on Comparisons. The screen below will appear.
  1. Click on Tukey's, family error rate. We will usually use a 5% error rate, so enter 5 in the box. Click O.K. twice.
  2. The following output will appear.
One-way ANOVA: Values versus Levels

Analysis of Variance for Values
Source     DF        SS        MS        F        P
Levels      5   108.185    21.637    79.26    0.000
Error      20     5.459     0.273
Total      25   113.645
                                                    Individual 95% CIs For Mean
                                                       Based on Pooled StDev
Level       N      Mean     StDev   ---------+---------+---------+-------
Blue Bon    4    13.825     0.443          (--*--)
Chiffon     4    13.100     0.594     (--*-)
Fleischm    4    18.100     0.648                                            (--*-)
Imperial    4    14.100     0.356                (--*-)
Mazola      5    17.140     0.598                                     (--*-)
Parkay      5    12.800     0.430     (-*-)
                                                    ---------+---------+---------+-------
Pooled StDev =    0.522                           14.0      16.0      18.0

Tukey's pairwise comparisons

    Family error rate = 0.0500
Individual error rate = 0.00508

Critical value = 4.45

Intervals for (column level mean) - (row level mean)

                Blue Bon      Chiffon        Fleischm       Imperial      Mazola

Chiffon      -0.4375
                1.8875

Fleischm     -5.4375      -6.1625
                 -3.1125      -3.8375

Imperial       -1.4375     -2.1625        2.8375
                   0.8875       0.1625         5.1625

Mazola       -4.4178     -5.1428       -0.1428     -4.1428
                   -2.2122     -2.9372        2.0628     -1.9372

Parkay       -0.0778     -0.8028       4.1972         0.1972      3.3002
                    2.1278      1.4028       6.4028         2.4028      5.3798