Quantitative Reasoning. Primary 5

Table of Contents

 

Class: Basic 5 Subject: Quantitative Reasoning.

 

Topic: Mean and mode of set of numbers.

 

Mean is the average of a given set of numbers.

It is calculated as the sum of the set of numbers divided by numbers in the set.

 

Mean = Sum of given numbers / Amount of number

 

Mode is the number that occurs most or appears most.

 

For example :

1.) Find the mean and mode of these numbers: 2, 1, 2, 1, 4, 2.

 

Solution:

2+1+2+1+4+2 =12

12 / 6 = 2

The mean is = 2

The mode is = 2, because it appears 3times in the set of numbers.

 

2.) What is the mean and mode of 3, 4, 6, 3, 2, 5, 4, 2, 3, 8.

Solution:

3+4+6+3+2+5+4+2+3+8= 40

40 / 10 = 4

The mean is = 4

The mode is = 3, because it occurs most.

 

Use the examples above to answer the following questions:

Find (a) the mean and (b) the mode of the given sets of numbers below:

 

1.) 5, 3, 5, 4, 6, 5, 7

 

2.) 7, 5, 4, 5, 10, 8

 

3.) 20, 30, 5, 20, 25

 

4.) 9, 8, 9, 10, 10, 9, 9, 12

 

5.) 15, 14, 15, 13, 16, 16, 17, 13, 16, 17

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