The marks obtained by 19 students of a class are given below: 27, 36, 22, 31, 25, 26, 33, 24, 37 32, 29, 28, 36, 35, 27, 26, 32, 35, 38. Find Lower Quartile.
26
33
27
35
Find the Mode: 9, 11, 8, 11, 16, 9, 11, 5, 3, 11, 17 and 18.
9
5
11
3
Find the lower quartile of the first twelve natural numbers.
3.5
4.5
2.5
5.5
The mean of the number 6, y, 7, x and 14 is 8. Express y in terms of x.
y = 13 - x
y = 9 - x
y = 6 - x
y = 14 - x
The arithmetic mean of first n natural numbers is
n/2
n/2 + 1
n+1/2
n-1/2
A boy scored following marks in various class tests during a term. 15, 17, 16, 7, 10, 12, 14, 16,19, 12, 16What are his median marks?
17
15
12
19
The mean length of rope in 40 coils is 14m. A new coil is added in which the length of the rope is 18m. What is the mean length of the ropes now?
14.5 m
14.1 m
14.3 m
14 m
Find the mean of 7, 11, 6, 5,and 6, if each number given is diminshed by 2.
7
6
8
Runs scored by 11 players of a team are 40, 32, 15, 1, 75, 21, 25, 5, 0, 9, 10. Find the lower quartile of the data.
4
Find the mean of natural numbers from 3 to 12.
7.2
7.5
7.9
