Independent samples t test spss output example

Spss calculates the tstatistic and its pvalue under the assumption that the sample comes from an approximately normal distribution. At first glance, you can see a lot of information and that might feel intimidating. Interpret spss output for an independent ttest youtube. The independent samples t test compares two sample means to. How to do an independent samples t test in spss 115. Independent samples t test in spss quick spss tutorial. Interpret the spss output for an independent twosample ttest. A lesson on how to perform an independent sample ttest using spsspasw. First off, note that theres only a small difference between our sample means. How to interpret an independent t test in spss sciencing. A quick and easy tutorial showing how to do an independent samples t test in spss.

Another way of measuring the difference between two samples is to. A market research company found that children in america between the ages of 5 and 12. Spss independent samples ttest tutorial spss tutorials. When you put the three main components together, results look something like this. Click on define groups, and input the values that define each of the groups. The singlesample ttest compares the mean of the sample to a given number which you supply. In this video, you will also learn about how to interpret the output of this test. How do i interpret data in spss for an independent samples. The independent samples ttest compares the difference in the. Independent samples ttest interpretation in spss youtube. For example, you may want to test to determine if there is a difference between the cholesterol levels of men and women. Quick steps click on analyze compare means independentsamples t test. Drag and drop the dependent variable into the test variable s box. The single sample ttest tests the null hypothesis that the population mean is equal to the number specified by the user.

Spss conveniently includes a test for the homogeneity of variance, called levenes test, whenever you run an independent samples t test. Independent samples t test spss tutorials libguides at kent. Fortunately, when using spss statistics to run an independent ttest on your data, you can easily detect possible outliers. There was a significant difference in the scores for sugar m4. Second, note that the sample sizes used for our t test are 49 and 34. How do i report independent samples ttest data in apa style. Independent samples ttest example in spss where the aim is to test the difference in means between 2 groups of a quantitative variable. Independent ttest in spss statistics procedure, output and.

An independentsamples ttest was conducted to compare memory for words in sugar and no sugar conditions. This is not uncommon when working with realworld data rather than textbook examples, which often only show you how to carry out an independent ttest when. I perform an independent samples ttest on data that have been simulated to correspond to an actual study done by brody et al. Children from divorced parents have an average anxiety score of 22.