SPSS Tutorial en pdf

SPSS Tutorial en pdf, tutoriel & guide de travaux pratiques en pdf.

In this tutorial we will perform an independent-samples t test. We will work with the SPSS Cars data file. Our task will be to compare the mean miles per gallon for American cars with the mean miles per gallon for Japanese cars. The null hypothesis says that our two samples of cars (the dependent variable is miles per gallon) come from the same population. In other words, there is no difference in mpg between American and Japanese cars.
Open the Cars data file (see tutorial 1-3). View the data in Variable View mode. Under the Values column for (Country of) Origin row (row 7) look at the value labels assigned to American (1), European (2), and Japanese (3) cars.
Click on OK then return to the Data view shown below…
Click on Analyze, choose… Compare Means, then choose Independent- Samples T Test…
Choose the Miles per Gallon (mpg) variable and move it to the Test Variable(s): window…