OneWay ANOVA in MINITAB^{TM}
Chapter 7, Printout 1
 Launch MINITAB.
 Enter the data.
 Name Column C1 by clicking the blank column label and typing "Formula"
 Name Column C2 "Strength"
 In Column C1, enter the concrete formula numbers from the "Concrete Formula" column in Table 7.1 (p. 447).
 In Column C2, enter the compressive strength data from the "28Day Compressive Strength" column in Table 7.1.
Screenshot:
 Generate an Analysis of Variance table.
 Select "Stat > ANOVA > OneWay."
 Fill out the resulting dialog box as follows:
Input Type 
Label 
Value 

Response: 
Strength 

Factor: 
Formula 

Store residuals 
checked 

Store fits 
checked 
Screenshot:
 Click "Graphs."
 Fill out the resulting dialog box as follows:
Input Type 
Label 
Value 

Dotplots of data 
unchecked 

Boxplots of data 
unchecked 

Histogram of residuals 
unchecked 

Normal plot of residuals 
checked 

Residuals versus fits 
checked 

Residuals versus order 
unchecked 

Residuals versus the variables: 

Screenshot:
 Click "OK" to close the "Graphs" dialog box.
 Click "OK" in the "Oneway Analysis of Variance" dialog box.
MINITAB displays an Analysis of Variance table (in the "Session" window) and two graphs: a normal plot of residuals and a graph of residuals vs. fits.
Screenshot (table):
Screenshot (normal plot of residuals):
Screenshot (residuals vs. fits):