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- The systolic blood pressure of individuals is thought to be related to both age and weight. Let the systolic blood pressure, age, and weight be represented by the variables x1, x2, and x3, respectively. Suppose that Minitab was used to generate the following descriptive statistics, correlations, and regression analysis for a random sample of 15 individuals. Relative to its mean, which variable has the greatest spread of data values?Assume we have met the assumptions of using Pearson's correlation. If we wanted to test whether there was a linear relationship between postnatal depression scores and antenatal depression scores, Which test on spss would we run for pearson's correlation and the p-value?