We can conclude that there is a statistically significant relationship between whether the a car has an automatic or manual transmision and the amount of fuel it consumes per 100 kilometers of city driving. The t-test and its associated level of significance lead us to reject the null hypothesis that these two means are equal (t = 7.545, df = 402.021, p-value < 0.05). We see the mean difference between the two groups is about 1.66 liters of fuel. That means we should focus our remaining attention on the results for t-test when equal variances are not assumed (known as Welch’s t-test). But when you run a multivariate analysis, SPSS behaves as if you have no data at all. The F-test tells us we should reject the null hypothesis that the variance of fuelusecity is equal across the two groups. 1) Using the Windows Control Panel uninstall IBM SPSS Statistics 21 2) Reboot the computer 3) Locate the IBM SPSS Statistics 21 executable and right click and select 'Run as administrator' 4) Install and license the software 5) Launch IBM SPSS Statistics 21 6) Open the dataset (. Imagine that you have a large dataset, with thousands of rows. It is common to reject a null hypothesis when a reported level of statistical significance for a test is less than 0.05. It also produces the t-test, the degrees of freedom, a significance level, the mean difference, the standard error of that mean difference, and a 95% confidence interval for that mean difference under both the assumption that the variances of the two groups are equal and the assumption that they are not. First it provides an F-test (denoted as Levene’s test) of whether or not the variances of fuelusecity for the two groups can be assumed to be equal or not, along with an appropriate estimate of statistical significance. SPSS produces a lot of output in this table. Figure 6: Results from using a t-test to test the difference in fuel consumption between automobiles with automatic and manual transmissions, respectively, assuming unequal variance, Fuel Consumption Report, Natural Resources Canada, 2015.

Spss ibm error you must open data