An independentsamples ttest was conducted to compare memory for words in sugar and no sugar conditions. The singlesample ttest compares the mean of the sample to a given number which you supply. For example, you may want to test to determine if there is a difference between the cholesterol levels of men and women. Spss independent samples ttest tutorial spss tutorials.
But i also would to include covariates lets say body weight, age in the analysis, i suppose it. Fortunately, when using spss statistics to run an independent ttest on your data, you can easily detect possible outliers. A market research company found that children in america between the ages of 5 and 12. Independent samples t test in spss quick spss tutorial. Click on define groups, and input the values that define each of the groups. Interpret spss output for an independent ttest youtube. Independent samples ttest interpretation in spss youtube. Spss calculates the tstatistic and its pvalue under the assumption that the sample comes from an approximately normal distribution. The independent samples t test compares two sample means to.
How to interpret an independent t test in spss sciencing. How do i report independent samples ttest data in apa style. At first glance, you can see a lot of information and that might feel intimidating. 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. A quick and easy tutorial showing how to do an independent samples t test in spss. Independent samples t test spss tutorials libguides at kent. Independent ttest in spss statistics procedure, output and. Another way of measuring the difference between two samples is to. When you put the three main components together, results look something like this. The single sample ttest tests the null hypothesis that the population mean is equal to the number specified by the user. Drag and drop the dependent variable into the test variable s box.
How to do an independent samples t test in spss 115 duration. I perform an independent samples ttest on data that have been simulated to correspond to an actual study done by brody et al. Interpret the spss output for an independent twosample ttest. Independent samples ttest example in spss where the aim is to test the difference in means between 2 groups of a quantitative variable. How to do an independent samples t test in spss 115. 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. Spss conveniently includes a test for the homogeneity of variance, called levenes test, whenever you run an independent samples t test. There was a significant difference in the scores for sugar m4. But don t worry, you actually only have to look at half of the information in this box, either the top row or the bottom row. Quick steps click on analyze compare means independentsamples t test. In this example, frisbee throwing distance in metres is the dependent variable, and dog owner is the.