Does it matter which Inspection Company???
D
M
A
I
C
0.5
1.5
2.5
3.5
95% Confidence Intervals for Sigmas
Winston Services
North TX Inspection
0
1
2
3
4
5
Boxplots of Raw Data
Inspection D
F-Test
Test Statistic: 0.350
P-Value : 0.125
Factor Levels
North TX
Inspection
Winston Services
2002 Test for Equal Variances between Inspection Companies
P-Value : 0.402
Test Statistic: 0.737
Levene's Test
