Heights of 12 boys (in cm) are given as: 143,144,141,145,147,144,142,145,149,151,147,143. What is the frequency of boys with a height of 143 cm?

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Solution

The correct option is A 2
Arranging the heights of 12 boys in acsending order we get

141, 142 , 143, 143, 144, 144 ,145 , 145, 147 , 147 ,149, 151

The number of times a particular observation occurs is known as frequency.

Here in our set of data, we see that the boys there are 2 boys with height 143 cm.
Therefore , frequency of boys with a height of 143 cm is 2

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Height of 12 boys (in cm) are :
$143, 144, 141, 145, 147, 144, 142, 145, 149, 151, 147, 143$

What is the frequency of boys with a height of 143 cm?

Heights of 12 boys (in cm) are given as:

143,144,141,145,147,147,142,145,149,151,147,143.

Which is the height with maximum frequency?

Heights of 12 boys (in cm) are given as: 143,144,141,145,147,147,142,145,149,151,147,143. Which is the height with maximum frequency?

30

Height in cm	Frequency
120 - 129 130 - 139 140 - 149 150 - 159 150 - 159	2 8 10 7 3

140

M_{1}

M_{2}

M_{1} - M_{2}

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