Answer to Question #294247 in Statistics and Probability for Haruto

Question

Construct a grouped frequency table for the data of 50 statistics examination scores. 96 69 63 69 $70 76 39 82 95 88 57 55 88 43 55 94 73 66 69 98 84 81 82 71 77 90 76 86 59 63 71 85 49 93 92 72 68 73 89 75 79 90 74 75 78 60 48 90 64 69

Construct a grouped frequency distribution for the given data on weekly salaries in pesos of 40 employees. 750 680 728 800 8888 615 850 890 900 950 830 728 550 700 920 815 790 805 920 985 795 750 610 780 900 800 820 760 790 650 750 690 720 810 750 960 805 780 728 804 812

Answer 1

$a)$

The minimum and maximum scores are 39 and 98 respectively.

The range is 98-39=59

We shall use a class width of 5.

The frequency distribution table is shown below,

score frequency

35-39 1

40-44 1

45-49 2

50-54 0

55-59 4

60-64 4

65-69 6

70-74 7

75-79 7

80-84 4

85-89 5

90-94 6

95-99 3

$b)$

The minimum and maximum scores are 550 and 985 respectively.

The range is 985-550=435

We shall use a class width of 50.

The frequency distribution table is shown below,

salary frequency

550-599 1

600-649 2

650-699 3

700-749 5

750-799 10

800-849 10

850-899 2

900-949 4

950-999 3