Skip to Content

Build your own quiz

No student devices needed. Know more

15 questions

Show Answers

See Preview

- Multiple ChoicePlease save your changes before editing any questions.
If the mean of frequency distribution is 7.5 and summation of fixi =120+3k, summation of fi= 30 then k is

40

35

50

45

- Multiple ChoicePlease save your changes before editing any questions.
The mode and mean is given by 7 and 8 respectively. Then the median is

1/13

13/3

23/3

33

- Multiple ChoicePlease save your changes before editing any questions.
The mean of the data 4,10,5,9,12 is

8

10

9

15

- Multiple ChoicePlease save your changes before editing any questions.
The median of the data 13,15,16,17,19,20 is

30/2

31/2

33/2

35/2

- Multiple ChoicePlease save your changes before editing any questions.
If the sum of frequencies is 24 then the value of x in the observation x,5,6,1,2 will be

4

6

8

10

- Multiple ChoicePlease save your changes before editing any questions.
The mean of following distribution is

Xi : 11 14 17 20

fi : 3 6 8 7

15.6

17

14.8

16.4

- Multiple ChoicePlease save your changes before editing any questions.
CI: 0-10 10-20 20-30 30-40 40-50

f: 20 30 24 40 18

the sum of lower limits of the modal class and median class is

20

30

40

50

- Multiple ChoicePlease save your changes before editing any questions.
CI: 0-5 6-11 12-17 18-23 24-29

f: 26 20 30 16 22

The upper limit of the median class is

18.5

18

17.5

17

- Multiple ChoicePlease save your changes before editing any questions.
Mode and median of a data are 12k and 15k. Median of the data is

12k

14k

15k

16k

- Multiple ChoicePlease save your changes before editing any questions.
Mean of 100 items is 49. It was discovered that three times which should have been 60,70,80 were wrongly read as 40, 20, 50 respectively. The correct mean is

48

49

50

60

- Multiple ChoicePlease save your changes before editing any questions.
Marks: 0-10 10-20 20-30 30-40 40-50

No.of students: 3 9 13 10 5

The number of students who got marks less than 30 is

13

25

10

12

- Multiple ChoicePlease save your changes before editing any questions.
Mode is the

Middle most frequent value

Least frequent value

Max. Frequent value

None

- Multiple ChoicePlease save your changes before editing any questions.
If the mean of first n natural numbers is 5n/9 then n=?

6

7

9

10

- Multiple ChoicePlease save your changes before editing any questions.
If 35 is removed from the data 30, 34, 35,36,37,38,39,40 then the median increases by

2

1.5

1

0.5

- Multiple ChoicePlease save your changes before editing any questions.
The median when it is given that mode and mean are 8 and 9 respectively is

8.57

8.67

8.97

9.24