To assume that it is interval and normally distributed (we only need to assume that write We will use the same variable, write,Īs we did in the one sample t-test example above, but we do not need We wouldĬonclude that this group of students has a significantly higher mean on the writing testĪ one sample median test allows us to test whether a sample median differs Which is statistically significantly different from the test value of 50. The mean of the variable write for this particular sample of students is 52.775, Whether the average writing score ( write) differs significantly from 50. For example, using the hsb2 data file, say we wish to test One sample t-testĪ one sample t-test allows us to test whether a sample mean (of a normallyĭistributed interval variable) significantly differs from a hypothesized You can get the hsb data file by clicking on hsb2. ( write), mathematics ( math) and social studies ( socst). Number of scores on standardized tests, including tests of reading ( read), writing Socio-economic status ( ses) and ethnic background ( race). Students with demographic information about the students, such as their gender ( female), This data file contains 200 observations from a sample of high school Most of the examples in this page will use a data file called hsb2, high schoolĪnd beyond. Ordinal or interval and whether they are normally distributed), see What is the difference betweenĬategorical, ordinal and interval variables? for more information on this. In deciding which test is appropriate to use, it is important toĬonsider the type of variables that you have (i.e., whether your variables are categorical, You can see the page Choosing theĬorrect Statistical Test for a table that shows an overview of when each test isĪppropriate to use. Section gives a brief description of the aim of the statistical test, when it is used, anĮxample showing the SPSS commands and SPSS (often abbreviated) output with a brief interpretation of the
#How use spss modeler 18 to analyze research data how to#
This page shows how to perform a number of statistical tests using SPSS.
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