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1. Survey given to the sample of 200 college students contained questions about following variables. For each variable, identify the kind of graph that should be used to display the distribution of scores (histogram, polygon, or bar graph).
a) number of pizzas consumed during the previous week
b) size of T-shirt worn (S, M.L, XL)
c) gender (male/female)
d) grade point average for the previous semester
e) college class (freshman, sophomore, junior, senior)

2. Under what circumstances should you use a grouped frequency distribution instead of a regular frequency distribution?

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