User Manual

6-23
k Calculations Using the TEST Command
Important!
• The following operations cannot be performed on the fx-7400GIII.
You can use special functions in the RUN • MAT mode or PRGM mode to perform calculations
that are the same as the STAT mode
Z Test, t Test, and other test calculations (page 6-23).
Example To determine the
z score and p -value when a one-sample Z test is
performed under the conditions below:
test condition (  condition)
≠

0
*, assumed population mean 
0
= 0,
population standard deviation  = 1, sample mean
o
= 1, number of
samples n = 2
* “
 condition ≠ 
0
” can be specified by entering 0 as the initial argument of
the one-sample Z test command “OneSampleZTest”.
1. From the Main Menu, enter the RUN • MAT mode.
2. Perform the following key operation.
K5(STAT) 6( g) 1(TEST) 1(Z)
1(1-S) a,a,b,b,c
w
JJJ
1(LIST) 1(List) !-(Ans) w
The following calculation results are displayed as ListAns elements 1 through 4.
1:
z score
2:
p -value
3: o
4:
n
• For details about the function of the supported TEST command and their syntax, see “Using
the TEST Command to Execute a Command in a Program” (page 8-36).
5. Tests
Important!
• Test calculations cannot be performed on the fx-7400GIII.
The Z Test provides a variety of different standardization-based tests. They make it possible to
test whether or not a sample accurately represents the population when the standard deviation
of a population (such as the entire population of a country) is known from previous tests.
Z
testing is used for market research and public opinion research, that need to be performed
repeatedly.