Casio FX-9750GII - Manual (Page 162)

6-22
I Calculations Using the TEST Command
Important!
• The following operations cannot be performed on the fx-7400G II .
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 6-22).
Example To determine the z score and p -value when a one-sample Z test is
performed under the conditions below:
test condition (
ƫ condition) x ƫ
0
*, assumed population mean ƫ
0
= 0,
population standard deviation Ʊ = 1, sample mean M = 1, number of
samples n = 2
* “ ƫ condition x ƫ
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.
*(STAT)(E)(TEST)(Z)
(1-S)??@@A
U
)))
(LIST)(List)
The following calculation results are displayed as ListAns elements 1 through 4.
1: z score
2: p -value
3: M
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 8-32).
5. Tests
Important!
• Test calculations cannot be performed on the fx-7400G II .
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.