Prerequisite Skills VOCABULARY CHECK Copy and complete: The ? of a numerical data set is the middle number when the values are written in numerical order.

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Prerequisite Skills VOCABULARY CHECK Copy and complete: The ? of a numerical data set is the middle number when the values are written in numerical order. 1. ANSWER median

Prerequisite Skills SKILL CHECK Find the mean, median, and mode(s) of the data. 0.2, 1.3, 0.9, 1.5, 2.1, 1.8, ANSWER 1.2, 1.3, no mode 103, 121, 111, 194, 99, 160, 134, ANSWER , 127.5, 160

Prerequisite Skills SKILL CHECK Which activities have fewer than 60 participants? 4. baking, playing cards ANSWER In Exercises 4 and 5, use the bar graph, which shows the numbers of adults who participate in leisure activities, according to the results of a survey.

Prerequisite Skills SKILL CHECK Of those surveyed, how many more read books than play cards? 5. ANSWER 29 people