7. . Listed below are the heights in inches of a group of ten students. 61, 61, 62, 64, 67, 67, 68, 68, 69, 69 a. For the group, give the five-number summary, make a box plot, and find the mean height. Five-number summary: Mean height: b. Half of the students are between ___ and ___ inches tall. 8. The owner of an independent record shop monitored CD sales over a period of days. This histogram shows the results. a. Find the total number of days included in this data set. b. For how many days were fewer than 20 CDs sold? c. For how many days were at least 50 but fewer than 80 CDs sold? d. Explain the 80-90 interval. 9. a. State the coordinate points of each point on the coordinate plane. b. Name the points on the x and y axis. c. Name the points in Quadrant II. d. State the points with positive x-values and negative y-values. Chapter 2 Proportional Reasoning And Variation 10. Solve the proportion.
7. . Listed below are the heights in inches of a group of ten students. 61, 61, 62, 64, 67, 67, 68, 68, 69, 69 a. For the group, give the five-number summary, make a box plot, and find the mean height. Five-number summary: Mean height: b. Half of the students are between ___ and ___ inches tall. 8. The owner of an independent record shop monitored CD sales over a period of days. This histogram shows the results. a. Find the total number of days included in this data set. b. For how many days were fewer than 20 CDs sold? c. For how many days were at least 50 but fewer than 80 CDs sold? d. Explain the 80-90 interval. 9. a. State the coordinate points of each point on the coordinate plane. b. Name the points on the x and y axis. c. Name the points in Quadrant II. d. State the points with positive x-values and negative y-values. Chapter 2 Proportional Reasoning And Variation 10. Solve the proportion.
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