Answer to Question #63438 in Statistics and Probability for rorri

Question

A long straight road in a small town of New York is being used to monitor driving speeds.
The first 50 cars gave the results shown in Table 1 below. The figures are in km/h to
the nearest whole number.

45 60 71 57 67 78 90 81 78 91
65 88 67 66 50 68 67 73 63 94
48 90 79 95 65 70 75 61 54 67
57 59 85 84 70 81 40 59 76 59
77 78 97 75 72 77 54 68 67 74
Table 1

Answer the following questions:
(a) Find the range.

(b) Construct a frequency distribution for these data.

(c) Represent the data by a histogram and draw a frequency polygon on the
same graph. Hence, estimate the mode.