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7-8-3
Test, Confidence Interval, and Distribution Calculations
Time A1 113, 116
Temperature B1
139, 132
Time A2 133, 131 126, 122
Temperature B2
k
Example 2: Two-Way ANOVA
The values in the table below are measurement results that show how the durability of
a metal product is affected by changes in heat treatment time (A) and temperature (B).
Experiments were conducted twice under each condition.
Perform analysis of variance on the null hypotheses listed below, using a 5% level of
significance.
H
0
: Change in time does not affect durability.
H
0
: Change in treatment temperature does not affect durability.
H
0
: Changes in time and treatment temperature do not affect durability.
Use the ClassPad Two-Way ANOVA test to test the above hypotheses. Input the following
measurement data into the indicated lists. This data is from the table above.
list1 (FactorList(A)) = {1,1,1,1,2,2,2,2}
list2 (FactorList(B)) = {1,1,2,2,1,1,2,2}
list3 (DependentList) = {113,116,139,132,133,131,126,122}
u
ClassPad Operation
(1)
m
p
(2) Tap
O
.
(3) On the New File dialog box that appears, configure the settings as described below.
Type: Program(Normal)
Folder: Select the name of the folder where you want to save the program you are
creating.
Name: Enter a file name for the program.
Example: hyp
(4) Tap [OK].
(5) Input commands and values for the statistical expression, and then tap
w
.
(6) Input the “DispStat” command, and then tap
w
.
(7) Tap
{
to save the program.
(8) Tap
)
.
(9) On the dialog box that appears, tap the [Name] down arrow button, and then tap the
name of the file you input in step (3).