The following list gives the ages of 50 factory workers. Construct a Grouped Fre
ID: 3021803 • Letter: T
Question
The following list gives the ages of 50 factory workers. Construct a Grouped Frequency Distribution using 7 classes.
50
63
42
28
30
37
29
61
43
43
27
50
28
28
50
62
34
53
21
32
19
41
60
57
22
35
46
32
30
25
36
52
57
29
35
42
57
35
61
46
21
49
26
40
19
18
25
23
47
28
Range:
Class Width:
Fill in the table after creating the frequency distribution on paper. rf and crf are rounded to two decimal places ( Example: .15 not 0.15). Do not worry about the sum of the column being 1.0.
Class
Limits
Class
Boundaries
Midpoint
f
cf
rf
crf
-
-
-
-
-
-
-
-
-
-
-
-
-
-
50
63
42
28
30
37
29
61
43
43
27
50
28
28
50
62
34
53
21
32
19
41
60
57
22
35
46
32
30
25
36
52
57
29
35
42
57
35
61
46
21
49
26
40
19
18
25
23
47
28
Explanation / Answer
Step 1. Range = maximum value - minimum value = 63- 18 = 45
Step 2. Class widhth= range / no. of class = 45 / 7 = 6.428
Round the number from Step 2, up to a whole number to get the class width. Rounded up, 6.428 becomes 7
Cumulative Relative Relative Ccumulative U.L Class Limit Class Boundary Mid points Frequency Frequency Frequency frequency 24.5 18-24 17.5-24.5 21 7 7 .14 .14 31.5 25-31 24.5-31.5 28 12 19 .24 .38 38.5 32-38 31.5-38.5 35 8 27 .16 .54 45.5 39-45 38.5-45.5 42 6 33 .12 .66 52.5 46-52 45.5-52.5 49 7 40 .14 .8 59.5 53-59 52.5-59.5 56 4 44 .08 .88 Total : 49Related Questions
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