Statistics - Assessment

1.

Multiple Choice

30 sec

1 pt

If n is the total number of observations, the class whose cumulative frequency is greater than $\frac{n}{2}$ This class is called the median

TRUE

FALSE

2.

Multiple Choice

30 sec

1 pt

For a certain distribution,mode and median were found to be 100 and 1250 respectively. Find mean for this distribution using an empirical relation

1375

1265

1145

1550

3.

Multiple Choice

30 sec

1 pt

The wickets taken by a bowler in 10 cricket matches are as follows: 2,6,4,5,0,2,1,3,2,3 Find the mode of the data

2

3

4

5

4.

Multiple Choice

30 sec

1 pt

Can the mean, median and mode of data coincide?

Yes

No

5.

Multiple Choice

30 sec

1 pt

The mean, median and mode of grouped data are always different

TRUE

FALSE

6.

Multiple Choice

30 sec

1 pt

The median of frequency distribution is found graphically with the help of

a histogram

a frequency curve

a frequency polygon

ogives

7.

Multiple Choice

30 sec

1 pt

The class mark of the class 5.5-20.5 is

15.5

20.5

18

5

8.

Multiple Choice

30 sec

1 pt

Find the class mark of class 35-55

45

46

47

48

9.

Multiple Choice

30 sec

1 pt

The graphical representation of a cumulative frequency distribution is called

Bar graph

Histogram

Frequency polygon

Ogive

10.

Multiple Choice

30 sec

1 pt

An ogive is used to determine

Standard deviation

Median

Mode

Mean

11.

Multiple Choice

30 sec

1 pt

In a frequency distribution the class having maximum frequency is called the modal class

TRUE

FALSE

12.

Multiple Choice

30 sec

1 pt

The abscissa of the point of intersection of less than type and more than type cumulative frequency curves of a grouped data gives its

Mean

Median

Mode

Class

13.

Multiple Choice

30 sec

1 pt

The relationship between mean, median and mode is

.............median = 2 .......... + ...........

2,median, mode

3,median, mode

2,mean, mode

3,mean, mode

14.

Multiple Choice

30 sec

1 pt

Which one of the following measures is determined only after the construction of cumulative frequency distribution?

Mean

Median

Mode

None of the above

15.

Multiple Choice

30 sec

1 pt

Two ogives less than and more than type for the same data intersect at the point P. The y-coordinate of P represents

Modal

Range

Cumulative frequency of the median class

Median

16.

Multiple Choice

30 sec

1 pt

If the median of the data 4, 7, x-1, x-3, 16, 25 written in ascending order is 13 then x is equal to

13

14

15

16

17.

Multiple Choice

30 sec

1 pt

In the class interval 50-55 what is the Upper limit?

50

55

49.5

54.9

18.

Multiple Choice

30 sec

1 pt

The mode of a frequency distribution is obtained graphically from

a frequency curve

a frequency polygon

a histogram

an ogive

19.

Multiple Choice

30 sec

1 pt

An ........... is a freehand graph showing the curve of a cumulative frequency distribution

Ogive

Bar graph

histogram

None of the above

20.

Multiple Choice

30 sec

1 pt

It is assumed that the frequency of each interval is centred around its

mid point

lower limit

upper limit

none of the above

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