Measures of Central Tendency

Q.

What are the Uses of Mode?

Q.

In a set of observations, the observation that occurs the most often is called _________.

Q. If the mean of observations x, x + 2, x + 4, x + 6 and x + 8 is 11, find:
(i) The value of x;
(ii) The mean of first tree observations. Solution.

1. (i) 7
   (ii) 9
2. (i) 7
   (ii) 10
3. (i) 8
   (ii) 9
4. (i) 8
   (ii) 10

Q.

What is meant by mode of a given set of observations?

1. The frequency of an observation

2. None of these

3. The frequency of the most frequently occuring observation.

4. The value corresponding to maximum frequency.

Q.

In the class intervals given as 0-10, 10-20, ..... and so on, the number 22 is included in the class interval :

1. 10-20

2. 20-30

3. 30-20

4. more than 25

Q.

Which of the following is a measure of central tendency?

1. Class

2. Frequency

3. Class interval

4. Mode

Q.

Ram appeared in his mid-term examination and his marks in different subjects were:-

$$\begin{array}{cc}\text{Subject}& \text{Marks}\\ \text{Science}& 75\\ \text{Maths}& 85\\ \text{Hindi}& 75\\ \text{English}& 75\\ \text{Social Science}& 65\end{array}$$

The mode of the above data is _____.

1. 3

2. 25

3. 85

4. 75

Q.

Marks obtained by 5 students in a class test out of 25 are 12, 15, 12, 20, 17 respectively. Find the mode of the given set of observations.

1. 15

2. 20

3. 17

4. 12

Q. What is the class mark of the class interval 40.5 - 50.5?

1. 45.5
2. 50.5
3. 40.5
4. 91

Q.

Which among these is a measure of central tendency?

1. Mean

2. Mode

3. Median

4. All of these