The monthly salaries in rupees of 30 workers in a factory are given below. 5000, 7000, 3000, 4000, 4000, 3000, 3000, 3000, 8000, 4000, 4000, 9000, 3000, 5000, - Algebra

Advertisements
Advertisements
Sum

The monthly salaries in rupees of 30 workers in a factory are given below.

5000, 7000, 3000, 4000, 4000, 3000, 3000, 3000, 8000, 4000, 4000, 9000, 3000, 5000, 5000, 4000, 4000, 3000, 5000, 5000, 6000, 8000, 3000, 3000, 6000, 7000, 7000, 6000, 6000, 4000

From the above data find the mean of monthly salary.

Advertisements

Solution

The monthly salaries in rupees of 30 workers in a factory are given below:

5000, 7000, 3000, 4000, 4000, 3000, 3000, 3000, 8000, 4000, 4000, 9000, 3000, 5000, 5000, 4000, 4000, 3000, 5000, 5000, 6000, 8000, 3000, 3000, 6000, 7000, 7000, 6000, 6000, 4000

The frequency table of the above data is as follows:

Salaries (Rs.)
(xi)
Number of workers
(fi)
fixi
3000 8 24000
4000 7 28000
5000 5 25000
6000 4 24000
7000 3 21000
8000 2 16000
9000 1 9000
  Total N = 30 Total = 147000

Mean = `(∑ f_ix_i)/(∑ f_i)`

Mean = `147000 / 30`

= 4900

So, the mean of monthly salary is Rs. 4900.

  Is there an error in this question or solution?
Chapter 7: Statistics - Practice set 7.5 [Page 125]

APPEARS IN

Balbharati Mathematics 1 Algebra 9th Standard Maharashtra State Board
Chapter 7 Statistics
Practice set 7.5 | Q (4) | Page 125

RELATED QUESTIONS

Find the mean salary of 60 workers of a factory from the following table:-

Salary (in Rs) Number of workers
3000 16
4000 12
5000 10
6000 8
7000 6
8000 4
9000 3
10000 1
Total 60

The percentage of marks obtained by students of a class in mathematics are : 64, 36, 47, 23,
0, 19, 81, 93, 72, 35, 3, 1. Find their mean.


Find the value of p for the following distribution whose mean is 16.6

x: 8 12 15 p 20 25 30
f : 12 16 20 24 16 8 4

Find the mode from the following data:

125, 175, 225, 125, 225, 175, 325, 125, 375, 225, 125


Find the mode of the following data :
7, 9, 12, 13, 7, 12, 15, 7, 12, 7, 25, 18, 7


If the median of 33, 28, 20, 25, 34, x is 29, find the maximum possible value of x.

 

The following is the data of wages per day : 5, 4, 7, 5, 8, 8, 8, 5, 7, 9, 5, 7, 9, 10, 8
The mode of the data is


The mean of abcd and e is 28. If the mean of ac, and e is 24, What is the mean of band d?


Yield of soyabean per acre in quintal in Mukund's field for 7 years was 10, 7, 5, 3, 9, 6, 9. Find the mean of yield per acre.


Find the median of the observations, 59, 75, 68, 70, 74, 75, 80.


A hockey player has scored following number of goals in 9 matches. 5, 4, 0, 2, 2, 4, 4, 3, 3.

Find the mean, median and mode of the data.


The mean salary of 20 workers is Rs.10,250. If the salary of office superintendent is added, the mean will increase by Rs.750. Find the salary of the office superintendent.


The mean of nine numbers is 77. If one more number is added to it then the mean increases by 5. Find the number added in the data.


If the mean of the following data is 20.2, then find the value of p.

xi 10 15 20 25 30
fi 6 8 p 10 6

The mean of 100 observations is 50. If one of the observations which was 50 is replaced by 150, the resulting mean will be ______.


Median of the following numbers 4, 4, 5, 7, 6, 7, 7, 12, 3 is ______.


There are 10 observations arranged in ascending order as given below. 45, 47, 50, 52, x, x + 2, 60, 62, 63, 74. The median of these observations is 53. Find the value of x. Also find the mean and the mode of the data.


Share
Notifications



      Forgot password?
Use app×