________ is a representative value of the entire data.
Mean
range
minimum value
maximum value
Mean of a set of observations is the value which
occurs most frequently
divides observations into two equal parts
is a representative of whole group
is the sum of observations.
The daily earnings (in rupees) of 10 workers in a factory are 8,16,19,8,16,19,16,8,19,16. The median wage is
17
8
19
16
The mean of 6, y, 7, x and 14 is 8. Then
x+y=13
x−y=13
2x+3y=13
x+y=15
The mode of a set of observations is the value which
occurs most frequently
is central
is between maximum and minimum
none of the foregoing
The difference between the maximum and the minimum observations in the data is
Class interval
Frequency
Cumulative frequency
Range
The number of times a particular item occurs in a class interval is called its
Mean
Freequency
Cumulative frequency
None
The average monthly income of a four members family is Rs.610.25, after the marriage of one girl the average income of the family becomes Rs.650.75, then the salary of married girl is
Rs.488.25
Rs.488.75
Rs.479.75
Rs.489.25
The mean of first 10 natural numbers is
2.5
5.5
6.5
5
In a class test in English, 10 students scored 75 marks, 12 scored 60 marks, 8 scored 40 marks and 3 scored 30 marks. The mode for their scores is
75
30
60
25
The mean of first five prime numbers is
3
3.6
7
5.6
Find the mean of 50 observations. It is given that the mean of 32 of them is 28 and the mean of the remaining 18 observations is 30.
30.24
28.72
24.82
30.32
Average of 10 number is 15. Average of first six number is 20 and that of least five number is 18. What is the sixth number?
60
70
50
85
The average of two numbers are 20. One number is 24, another number is ________
16
26
20
40
The mean of the data 12, x, 28 is 18. Find the value of x
18
16
14
22
The colours used by the six students for drawing is blue, orange, yellow, white, green and blue then the mode is _______.
blue
green
orange
yellow
Find the mode of data 3, 6, 9, 12, 15
1
2
3
no mode
Find the modes of the data 2, 1, 1, 3, 4, 5, 2
1 and 5
2 and 3
2 and 1
1 and 4
Find the mode of the following data. 14, 15, 12, 14, 16, 15, 17, 13, 16, 16,15, 12, 16, 15, 13, 14, 15, 13, 15, 17, 15, 14, 18, 19, 12, 14, 15, 16, 15, 16, 13, 12.
15
14
17
12
The marks obtained by 11 students of a class in a test are 23, 2, 15, 38, 21,19, 23, 23, 26, 34, 23. Find the mode of the marks.
26
23
21
No mde
Find the mode of the following data. 2, 6, 5, 3, 0, 3, 4, 3, 2, 4, 5, 2
2 and 3
3 and 4
Only 2
Only 3
The median of the data 24, 29, 34, 35, 38 and 30, is_____________
29.5
30.5
34.5
32.5
If the median of a, 2a, 4a, 6a, 9a is 8, then find the value of a is
8
6
2
10
The median first 6 odd natural numbers is ________
6
7
8
14
The lifetime (in days) of 11 types of LED bulbs is given in days. 365, 547,730, 1095, 547, 912, 365, 1460, 1825, 1500, 2000. Find the median life time of the LEDbulbs.