Independent Sample t-test Using SPSS Coursework

Independent Sample t-test Using SPSS - Coursework Example For this particular case, the samples were collected from the population (total number) of students studying Level 1Business Management at the University, and who took part in an Entrepreneurship Project. Therefore, one would say that the inclusion criterion was for students taking Business at level 1 and undertaking the project. Consequently, two different samples of unknown means were obtained randomly from this population: those who had studied Business previously (At A-level or equivalent), and those who had not. Generally, samples for t-test can be selected from a single population that is divided into two subgroups like our case. In descriptive research, we can define study population based on geographic location or sex, with additional variables and attributes such as our case where we used previous Business study as an attribute to categorize the group.The common statistical procedure is to assume that populations were samples are drawn have equal variances. However, it is im portant to test this assumption because certain statistical tests require equal variances of populations. Levene’s Test, an inferential statistic helps to assess whether variances are equal for two groups. That is, it tests the homoscedasticity or null hypothesis of equal population variances, also called the homogeneity of variance. Consequently, there are three possible instances where testing variance equality is a major concern. The first instance is when drawing inferences about population variances due to scientific interests.