Tests - Casio CFX-9970G User Manual

18-6 Tests

The
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.
public opinion research that need to be performed repeatedly.
1-Sample
known.
2-Sample
known.
1-Prop
specific proportion.
2-Prop
certain criteria.
The
sample is taken from a particular population. The hypothesis that is the opposite of
the hypothesis being proven is called the null hypothesis , while the hypothesis
being proved is called the alternative hypothesis . The
test the null hypothesis. Then a determination is made whether the null hypothesis
or alternative hypothesis will be adopted.
When the sample shows a trend, the probability of the trend (and to what extent it
applies to the population) is tested based on the sample size and variance size.
Inversely, expressions related to the
size required to improve probability. The
population standard deviation is not known, so it is useful in cases where there is
only a single survey.
1-Sample
2-Sample
population.
LinearReg
In addition to the above, a number of other functions are provided to check the
relationship between samples and populations.
!
a number of independent groups. Mainly, it generates cross-tabulation of two
categorical variables (such as yes, no) and evaluates the independence of these
variables. It could be used, for example, to evaluate the relationship between
whether or not a driver has ever been involved in a traffic accident and that
person's knowledge of traffic regulations.
Z
Test provides a variety of different standardization-based tests. They make
Z
Test tests the population mean when the standard deviation is
Z
Test compares two population means when standard deviations are
Z
Test tests whether or not data that satisfies certain criteria reaches a
Z
Test compares the proportions of data from two samples that satisfy
t
Test uses the sample size and obtained data to test the hypothesis that the
t
Test tests the hypothesis that a sample is taken from the population.
t
Test tests the hypothesis that two samples are taken from the same
t
Test calculates the strength of the linear association of paired data.
2 Test tests hypotheses concerning the proportion of samples included in each of
Z
testing is used for market research and
t
-test is normally applied to
t
test are also used to calculate the sample
t
test can be used even when the
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