When we analyze a categorical variable, we use bar charts. (Note: pie charts are also usable but almost always bar charts are preferable.) 8) Adding graphs to our analysis .... a) In (7) we investigated the association between gender and where students sit. Which variable is the explanatory variable, Gender or Seat? gender b) For the bars below labeled B, give the ratios used to calculate the percentages shown. (Refer to the data in (4).) Write a sentence to describe one of these percentages. Gender by Seat Choice 7000% 67 279 SODOX $1.0ZX 40.00 30100% 27 27% 2000% 1000% 5.45% 214 " Female " Male # Other c) For the bars below labeled Female, give the ratios used to calculate the percentages shown. Write a sentence to describe one of these percentages. Seat Choice by Gender 70.00% 60.6796 60.DO% 53.49% 40.00% 37.5027.50%% 29.07% 3000% 24.679 25.00% 20.00% 17.44% 10.00%% 0 00% Female Other d) Which set of bar charts above supports our investigation in (6)? Why? How does it relate to your answer to (8a)