# Measures of Central Tendency - A Short Test

28.61

38.81

29.13

28.31

For a symmetrical distribution and , the median is ____.

20

25

35

None of the above

The S.D of 15 items is 6 and if each item is decreased or increased by 1, then standard deviation is ____.

5

7

91/15

6

The A.M. of n observations is M. If the sum of observations is a, then the mean of remaining 4 observations is ____.

n M + a

The following item consists of two statements, one labelled as the ‘Assertion (A)’ and the other as ‘Reason (R)’. You are to examine these two statements carefully and select the answers to these items using the codes given below: Codes: Assertion: The mean of x1, x2, x3, x4, x5, x6, x7, x8 and x9 which are in an arithmetic progression is x5. Reason: Mean is always the middle-most observation if the data are in an arithmetic progression.

Both A and R are individually true and R is the correct explanation of A.

Both A and R are individually true but R is not correct explanation of A.

A is true but R is false

A is false but R is true

A student represents his scores in Mathematics, Statistics and Economics in a pie chart. The central angle for Mathematics is 120o. He scored 96 in Statistics and 84 in Economics. The central angle for Statistics is:

116o

128o

192o

212o

If a set of data has zero as an observation, then which one of the following is NOT an appropriate measure of central tendency?

Arithmetic mean

Geometric mean

Median

Mode

The following questions consist of two statements. One labelled as the Assertion (A) and the other as the Reason (R). You are to examine these two statements carefully and answer the questions using the coeds given below: Codes: Assertion (A): In its market survey, a company dealing in ready-made shirts, tries to determine the mean of the data collected for ascertaining the size requirements of maximum number of users. Reason (R): Model is the value, which occurs with greatest frequency.

Both A and R true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true, R is false

A is false, R is true

/

Both A and R true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true, R is false

A is false, R is true

If half the range of the increasing series {13, A, 25, B, C, 58, 81} is equal to its median, what is the median of the series?

31

35

36

34

38

The mean daily profit made by shopkeeper in a month of 30 days was Rs.350. If the mean profit for the first fifteen days was Rs.275, then mean profit for the last fifteen days would be:

Rs.200

Rs.275

Rs.350

Rs.425

**Description:**

Questions Based on Different Quantities Related to Central Tendency has been asked . Few questions are 'Assertion- Reason ' type as asked in IIT-JEE exam

**Discussion**

### Your Facebook Friends on WizIQ

### More Tests By Author

**
PHYSICS : REVISION TEST ON TOPICS OF CLASS XII ---XIII**

10 Questions
| 810 Attempts

**
PHYSICS : REVISION TEST ON TOPICS OF CLASS XI --XIII**

10 Questions
| 211 Attempts

**
PHYSICS : REVISION TEST ON TOPICS OF CLASS XI --XII**

10 Questions
| 301 Attempts

**
PHYSICS : REVISION TEST ON TOPICS OF CLASS XI --XI**

10 Questions
| 332 Attempts