Question-1
Present the following data by histograms.
Solution:
The difference between two class marks is
x = 27.50 - 22.50 = 5.00
The value of == 2.50
Lower and upper limits for 22.50 will be
22.50 - 2.50 = 20.00 and 22.50 + 2.50 = 25.00
.^{.}. First class interval 20.00 - 25.00
Similarly we can calculate other class intervals,
The histogram of the above table is:
Daily wages (in `) |
No. of workers |
22.50 |
6 |
27.50 |
9 |
32.50 |
13 |
37.50 |
7 |
42.50 |
9 |
47.50 |
5 |
52.50 |
3 |
Total |
52 |
Solution:
The difference between two class marks is
x = 27.50 - 22.50 = 5.00
The value of == 2.50
Lower and upper limits for 22.50 will be
22.50 - 2.50 = 20.00 and 22.50 + 2.50 = 25.00
.^{.}. First class interval 20.00 - 25.00
Similarly we can calculate other class intervals,
Daily wages |
20-25 |
25-30 |
30-35 |
35-40 |
40-45 |
45-50 |
50-55 |
No. of workers |
6 |
9 |
13 |
7 |
9 |
5 |
3 |
The histogram of the above table is: