advertisement

Quarter 1: Exam 2 Review Sheet: Distribution Shapes – know what they look like and be able to describe them. (Text p.64 – 65) 1) Different types of cameras are available to record memories of family, vacations, and special moments. A survey of 1,000 cameras purchased last year showed that 450 were 35 mm, 210 were disk, 300 were instant, and 40 were other types. a) Make a table to display the data. b) Make a Pareto Chart showing the camera types and volume of sales. 2) Foreign investment in the United States industry has been increasing. In 1955 foreign investments amounted to $13.4 billion; in 1960 investments totaled $18.4 billion; in 1965, $26.3 billion; in 1970, $44.8 billion, and in 1980, $160 billion. a) Make a table representing the above information. b) Make a time plot based on your table. 3) At a recent meeting of the campus diet club, each member recorded the amount of weight he or she had lost in the past two weeks (in pounds). 6 2 5 9 0 3 1 10 11 3 7 6 5 2 5 6 12 7 8 3 2 4 17 7 3 0 2 5 10 7 6 4 7 11 12 6 10 4 10 a) Make a frequency table for the data using 6 classes. Use the columns class, class boundaries, tally, frequency, relative frequency, and class midpoint. b) Construct a frequency histogram. c) Construct a cumulative frequency histogram. d) Construct a frequency polygon. 4) The rank and tenure committee recorded the ages of 40 professors in the College of Arts and Sciences. The ages rounded to the nearest year follow. 61 35 42 31 28 25 40 52 59 48 65 30 41 57 49 32 63 29 67 24 39 41 68 50 59 63 47 35 42 46 38 27 64 43 45 40 39 60 28 33 a) Make a frequency table for the data using 5 classes. Use the columns class, class boundaries, tally, frequency, relative frequency, and class midpoint. b) Construct a frequency histogram. c) Construct a relative frequency histogram. d) Construct a frequency polygon. e) What would your calculator WINDOW settings be? 5) Using 5 classes and the data values that follow construct an ogive and a chart with the appropriate columns: 75 90 87 63 90 87 68 97 82 79 78 85 99 83 72 64 73 74 73 74 74 73 6) Use the following data value to complete the questions below: 76 98 79 82 50 94 75 93 75 58 91 76 83 81 96 78 93 75 74 59 82 75 97 89 57 89 57 59 81 78 95 79 84 55 98 71 89 59 58 59 37 81 97 84 a) Construct a stem-and-leaf plot. b) Construct a stem-and-leaf plot using multiple lines per stem.