30 |
39 |
58 |
17 |
34 |
50 |
23 |
37 |
42 |
49 |
55 |
59 |
19 |
28 |
47 |
49 |
18 |
60 |
56 |
36 |
58 |
35 |
55 |
37 |
25 |
34 |
39 |
61 |
53 |
33 |
36 |
53 |
61 |
62 |
39 |
53 |
21 |
18 |
28 |
23 |
The highest observation = 61.
The lowest observation = 17.
One of the class intervals = 40–48.
Class size = Upper class limit - Lower class limit = 48 – 40 = 8
∴ The appropriate classes can be:
16–24, 24–32, 32–40, 40–48, 48–56, 56–64
Thus, the frequency distribution table for the above data can be:
Detailed solution not provided.
Ans. (i) 15-60 years
(ii) 30 thousand
(iii)
Detailed solution not provided.
Ans. (i) Sleep
(ii) Play and others
(iii Sleep , school , how work ; play , others
Following are the marks scored by 30 students in a test out of 40 marks. Using tally marks prepare a frequency table:
30 |
18 |
27 |
15 |
25 |
28 |
15 |
30 |
35 |
36 |
25 |
30 |
20 |
28 |
17 |
30 |
36 |
35 |
35 |
18 |
30 |
17 |
30 |
|
25 |
36 |
28 |
25 |
25 |
18 |
16 |