In Problems 9–12, determine whether the scatter diagram indicates that a linear relation may exist between the two variables. If the relation is linear, determine whether it indicates a positive or negative association between the variables.
Step 1 of 5) In Problems 9–12, determine whether the scatter diagram indicates that a linear relationship may exist between the two variables. If the relation is linear, determine whether it indicates a positive or negative association between the variables. Approach We will use StatCrunch to construct the frequency and relative frequency histograms. The steps for constructing the graphs using the TI-83/84 Plus graphing calculators, Minitab, Excel, and StatCrunch, are given in the Technology Step-by-Step on pages 86–87. Solution Figures 9(a) and (b) show the frequency and relative frequency histograms, respectively, obtained from StatCrunch.