Advertisements
Advertisements
प्रश्न
Ages of 15 students in 8th standard is 13, 12, 13, 14, 12, 13, 13, 14, 12, 13, 13, 14, 13, 12, 14. Find the mean age of the students
Advertisements
उत्तर
Aarithmetic Mean = `"Sum of all observations"/"Number of observations"`
= `(13 + 12 + 13 + 14 + 12 + 13 + 13 + 14 + 12 + 13 + 13 + 14 + 13 + 12 + 14)/15`
= `195/15`
= 13
Mean age of the students = 13
APPEARS IN
संबंधित प्रश्न
Following table shows the points of each player scored in four games:
| Player | Game 1 | Game 2 | Game 3 | Game 4 |
| A | 14 | 16 | 10 | 10 |
| B | 0 | 8 | 6 | 4 |
| C | 8 | 11 | Did not play | 13 |
Now answer the following questions:
- Find the mean to determine A’s average number of points scored per game.
- To find the mean number of points per game for C, would you divide the total points by 3 or by 4? Why?
- B played in all the four games. How would you find the mean?
- Who is the best performer?
Solve any two of the following.
In some families in a colony the daily purchase of milk in litre is 1, 3, 2, 2, 4, 1, 2, 2, 1. Find the mean, median and mode of daily purchase of milk.
The mean of 35 observations is 20, out of which mean of first 18 observations is 15 and mean of last 18 observation is 25. Find the 18th observation.
A batsman scored the following number of runs in six innings: 36, 35, 50, 46, 60, 55. Calculate the mean runs scored by him in an inning.
In a class test in mathematics, 10 students scored 75 marks, 12 students scored 60 marks, 8 students scored 40 marks and 3 students scored 30 marks. Find the mean of their score
The marks of 14 students in a science test out of 50 are given below. 34, 23, 10, 45, 44, 47, 35, 37, 41, 30, 28, 32, 45, 39 Find the maximum mark obtained
The average of two numbers are 20. One number is 24, another number is ____________
The mean of the data 12, x, 28 is 18. Find the value of x
Let x, y, z be three observations. The mean of these observations is ______.
If the arithmetic mean of 8, 4, x, 6, 2, 7 is 5, then the value of x is ______.
