For the given data , find mean , median and mode: 4 1 2 , 5 1 2 , 5 3 4 , 2 1 4 , 7

Given data is 4 1 2 , 5 1 2 , 5 3 4 , 2 1 4 , 7 = 9 2 , 11 2 , 23 4 , 9 4 , 7 The average of a given set of numbers is called the mean of the given numbers. Mean = S u m o f a l l o b s e r v a t i o n s T o t a l o b s e r v a t i o n s = 9 2 + 11 2 + 23 4 + 9 4 + 7 5 = 18 + 22 + 23 + 9 + 28 4 5 = 100 4 × 1 5 = 5 The mode of a set of data values having higher frequency. As we can see that there is no variable repeating more than once. So, there is no mode of the data. The median is the value in the middle of a data set. First arrange the data in ascending order. = 9 2 , 11 2 , 23 4 , 9 4 , 7 = 18 4 , 22 4 , 23 4 , 9 4 , 28 4 In ascending order 9 4 , 18 4 , 22 4 , 23 4 , 28 4 Thus, the median of the data is 22 4 = 5 1 2 . Therefore, mean of the data is = 5 and median = 5 1 2

E M B I B E

Be a Maths Star>Chapter 18 - Data Handling>Exercise 18.5>Q 4

MEDIUM

7th ICSE

IMPORTANT

Earn 100

For the data $1, 5, 7, x + 1, 9, x - 2, 3$ , if the mean is $4$ , then find the value of $x$ . Also find the mode.

Important Questions on Data Handling

EASY

7th ICSE

IMPORTANT

Be a Maths Star>Chapter 18 - Data Handling>Exercise 18.5>Q 5

A class of $25$ students reported the number of books read during the first half of the year. The data is as follows:

Number of books	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$
Number of students	$1$	$3$	$7$	$2$	$6$	$2$	$0$	$4$

Find the mode for this grouped data.

MEDIUM

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IMPORTANT

Be a Maths Star>Chapter 18 - Data Handling>Exercise 18.5>Q 6

For the given data , find mean , median and mode:

$9, 7, 11, 3, 5$

HARD

7th ICSE

IMPORTANT

Be a Maths Star>Chapter 18 - Data Handling>Exercise 18.5>Q 6

For the given data , find mean , median and mode:

$30, 22, 14, 18, 38, 22$

HARD

7th ICSE

IMPORTANT

Be a Maths Star>Chapter 18 - Data Handling>Exercise 18.5>Q 6

For the given data , find mean , median and mode:

$4 \frac{1}{2}, 5 \frac{1}{2}, 5 \frac{3}{4}, 2 \frac{1}{4}, 7$

HARD

7th ICSE

IMPORTANT

Be a Maths Star>Chapter 18 - Data Handling>Exercise 18.5>Q 6

For the given data , find mean , median and mode:

$1, 0.01, 1.1, 0.12, 1, 1.03$

EASY

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IMPORTANT

Be a Maths Star>Chapter 18 - Data Handling>Multiple Choice Questions>Q 1

A student collects information about the number of school-going children in a locality consisting of a hundred households. The data collected by the student is

EASY

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IMPORTANT

Be a Maths Star>Chapter 18 - Data Handling>Multiple Choice Questions>Q 2

To analyse the election results, the data is collected from newspapers. The data thus collected is known as

EASY

7th ICSE

IMPORTANT

Be a Maths Star>Chapter 18 - Data Handling>Multiple Choice Questions>Q 3

In an examination,