Question

2. The following are the weights in kg. of 50 college students. Construct a frequency table.
42,42,46,54,41,37,54,44,38,45,47,50,58,49,51,42,46,37,42,39,54,39,51,58,47,51,43,48,49,48,49,41,41,40,58,49,49,59,57,52,56,38,45,52,46,40,51,41,51,41

Answer 1

Answer:

The following are the weights in kg. of 50 college students. Construct a frequency table, such that the width of each interval is 4 and the upper limit of the last class is 60. 42 42 46 54 41 37 54 44 38 45 47

Explanation:

Answer 2

Weight in kg          Frequency (No. of students)

35 - 40                          8

40 - 45                          13

45 - 50                          12

50 - 55                          11

55 - 60                          6

Total                             50

Explanation:

Given: Total number of students = 50

            Lowest weight = 37

∴ The class interval starts with 35

∴ The difference between lower limit and upper limit is kept 5 for each interval = class size = 5

The frequency is the number of students of weight between the upper class interval and lower class interval for each interval.

Therefore, frequency table is as follows:

Weight in kg          Frequency (No. of students)

35 - 40                          8

40 - 45                          13

45 - 50                          12

50 - 55                          11

55 - 60                          6

Total                             50