ANOVA for 3 Independent Samples
(n per sample up to )
The logic and computational details of the one-way
independent-samples ANOVA are described in
Chapters 13 and 14 of
Concepts and Applications
.
Procedure:
The procedures available depend on whether you are using Netscape Navigator or Internet Explorer. [The browser you are now using is .]
Netscape Navigator 3.0 or later and Internet Explorer 3.0 or later:
A.
Direct Entry into Data Cells [
describe
]
Netscape Navigator 3.0 or later and Internet Explorer 4.5 or later:
B.
Import Data from a Spreadsheet [
describe
]
C.
Import Data from another VassarStats Page [
describe
]
D.
Export Data to a Spreadsheet or to another VassarStats Page [
describe
]
If you are importing or
exporting data, you
might find it handy to
use the
Data Storage
Window.
If you wish to perform another analysis with a different set of data: click the "Reset" button if the value of n for the largest of the new samples is or smaller; click the "Reload" button if the value of n for the largest of the new samples is larger than.
Import/Export Boxes
X
_{a}
X
_{b}
X
_{c}
Clear X
_{a}
Clear X
_{b}
Clear X
_{c}
Import data
to data cells
When importing data from a spreadsheet, you will probably come out with an extra line at at the end of the imported list of values. This line must be removed, else your computer will try to turn it into an additional value of Xa or Xb. To determine whether an extra line is present, click the cursor immediately to the right of the final entry in a list, then press the down-arrow key. If an extra line is present, the cursor will move downward. Note that in this message there are two extra lines at the bottom. They can be removed by pressing the down-arrow key until the cursor no longer moves, and then pressing the "Backspace" key (on a Mac platform, "delete") until the cursor stands immediately to the right of the period following this sentence.
Data Entry Cells
X
_{a}
X
_{b}
X
_{c}
Data
Summary
X
_{a}
X
_{b}
X
_{c}
Total
n
sum
mean
sumsq
SS
variance
st. dev.
Variances and standard deviations are calculated
with denominator = n-1.
ANOVA SUMMARY
Source
SS
df
MS
F
P
Treatment
[between groups]
Error
Tukey HSD test
Graph Maker
Total
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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©Richard Lowry 1998-2001
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