Uin a groupedirequency distribution table of this data.programme, in which they collected the following data regarding the number of plants in1. A survey was conducted by a group of students as a part of their environment awarenesslistribution tables, the groups should find the mean in each case by the method whichAfter all the groups have collected the data and formed grouped frequencyNChey find appropriate.EXERCISE 14.1the20 houses in a locality. Find the mean number of plants per house.Number of plants8- 10| 10-12.| 12-140-22-44-66-8Number of houses211.62.3Which method did you use for finding the mean, and why?2. Consider the following distribution of daily wages of 50 workers of a factoryDaily wages (in 7)500 - 520520-540540- 560560- 580580-600Number of workers12148.6.10Find the mean daily wages of the workers of the factory by using an appropriate method3. The following distribution shows the daily pocket allowance of children of a localio,The mean pocket allowance is Rs 18. Find the missing frequency f.17-1919-21 21-23 23-2511-1313-15 15-17Daily pocketallowance (in 7)Number of children76.913

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1. A survey was conducted by a group of students as a part of their environment awarenesS programme, in which they collected the following data regarding the number of plants in 20 houses in a locality, Find the mean number of plants per house, 8-10 10-12. 12-14 Number of plants 2-4 4-6 6-8 0-2 2 1. 5 2. Number of houses 3 Which method did you use for finding the mean, and why?

1. A survey was conducted by a group of students as a part of their environment awarenesS programme, in which they collected the following data regarding the number of plants in 20 houses in a locality, Find the mean number of plants per house, 8-10 10-12. 12-14 Number of plants 2-4 4-6 6-8 0-2 2 1. 5 2. Number of houses 3 Which method did you use for finding the mean, and why?

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Question

Uin a grouped
irequency distribution table of this data.
programme, in which they collected the following data regarding the number of plants in
1. A survey was conducted by a group of students as a part of their environment awareness
listribution tables, the groups should find the mean in each case by the method which
After all the groups have collected the data and formed grouped frequency
NC
hey find appropriate.
EXERCISE 14.1
the
20 houses in a locality. Find the mean number of plants per house.
Number of plants
8- 10| 10-12.| 12-14
0-2
2-4
4-6
6-8
Number of houses
21
1.
6
2.
3
Which method did you use for finding the mean, and why?
2. Consider the following distribution of daily wages of 50 workers of a factory
Daily wages (in 7)
500 - 520
520-540
540- 560
560- 580
580-600
Number of workers
12
14
8.
6.
10
Find the mean daily wages of the workers of the factory by using an appropriate method
3. The following distribution shows the daily pocket allowance of children of a localio,
The mean pocket allowance is Rs 18. Find the missing frequency f.
17-19
19-21 21-23 23-25
11-13
13-15 15-17
Daily pocket
allowance (in 7)
Number of children
7
6.
9
13

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