2x3 Factorial ANOVA: Independent Samples (n per sample up to )


The logic and computational details of this test are described
in Chapter 16 of Concepts and Applications.

Data Structure
B1 B2 B3
A1 A1B1 A1B2 A1B3
A2 A2B1 A2B2 A2B3

As illustrated in the adjacent table, the data structure for this analysis allows for two levels of variable A, laid out in the form of rows (A1 and A2), and three levels of variable B, laid out in the form of columns (B1, B2, and B3).

Procedure:
  • In the table that follows, labeled "Data Entry," enter the values of A1B1, A1B2, etc., into the designated text fields within each group. Pressing the "tab" key after each entry will take you down to the next text field in the group.

  • After all values have been entered in this fashion, scroll down to the button labeled "Calculate" and click it.

  • If you wish to perform another analysis with a different set of data: click the "Reset" button if the largest sample in your new set of data does not exceed ; click the "Reload" button if the size of any of the samples in your new set of data is larger than .

If you are working from a Windows platform, you might find the text fields in the various tables appearing and disappearing somewhat erratically. The way to fix this is to scroll all the way down to the bottom of the page, and then all the way back up to the top.
Data Entry
B1 B2 B3
A1
A2
     

Table of Means: Cells, Rows, Columns, and Total
B1 B2 B3 Rows
A1
A2
Columns

ANOVA SUMMARY
Source SS df MS F P
bg
rows
columns
r x c
wg
Total
bg = between groups; wg = within groups (error)
Printable Report—for Netscape Navigator 3.0 or later and Internet Explorer 4.5 or later. Do not click this button if you are using a version of Internet Explorer earlier than 4.5. [The browser you are now using is .]


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