![]() For example, the upper-tail area for a t-statistic of 2.40 from the t-distribution with 29 degrees of freedom (0.012), which is the p-value for an upper-tail test. To find an upper-tail area (p-value) for an F-distribution, type the Command window, where f is the value of the F-statistic, df1 is the numerator degrees of freedom, and df2 is the denominator degrees of freedom.īy contrast, the two-tail area for a t-statistic of 2.40 from the t-distribution with 29 degrees of freedom (0.023), which is the p-value for a two-tail test. ![]() To find an upper-tail area (p-value) for a chi-squared distribution, type the Command window, where chisq is the value of the chi-squared statistic and df is the degrees of freedom.For example, the upper-tail area (p-value) for an F-statistic of 51.4 for the F-distribution with 2 numerator degrees of freedom and 3 denominator degrees of freedom (0.005). Type the name of the quantitative variable into the Objects to display in a single window box and click OK.Ĭalculate descriptive statistics for a quantitative variable by selecting Quick > Show.For example, the upper-tail area (p-value) for a chi-squared statistic of 0.38 for the chi-squared distribution with 2 degrees of freedom (0.827).
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