xlstat for hillsborough community college students

They are followed by the results of the paired t-test: The first results displayed are the statistics for the samples. Interpreting the results of a Student's paired t-test This reflects the null hypothesis we are willing to test: mean(sample 1) minus mean(sample 2) equal 0.Īfter you have clicked on the OK button, the results are displayed on a new Excel sheet. In the Options tab, we enter 0 in the hypothesized difference field. You can then select the data on the Excel sheet. Once you've clicked the button, the dialog box appears. Once XLSTAT-Pro is activated, select the XLSTAT / Parametric tests / Two-sample t-test and z-test command, or click on the corresponding button of the Parametric tests menu (see below). Setting up a Student's paired t-test on two paired samples The goal of this tutorial is to compare the two periods with respect to the depression score. The variable to be compared is a depression score. Patients have been followed at two different times (0: pre-test and 6: 6 months follow-up). The data correspond to an experiment in which depression is studied. If we had 30 plants for the morning measurements and 30 different plants for the afternoon measurements, the t-test for independent samples would be more appropriate. We say paired because every plant is measured twice, so data is organized by pairs. Student's paired t-test can be used to detect a change in photosynthesis between the two dates. For example: the photosynthetic rate of 30 plants is followed at two moments during the day: morning and afternoon. Student's paired t-test allows to compare the means of two series of measurements performed on the same statistical units. This tutorial will help you compare two observed means ( this guide).

Xlstat for hillsborough community college students