Find the mean of the following frequency distribution:

145

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150

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146

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143

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147

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Solution

The correct option is D
143

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The attendance report of a class for 150 days is as follows:

$\begin{matrix} Student & Attendance 1 & 146 2 & 142 3 & 147 4 & 149 5 & 146 6 & 145 7 & 147 8 & 146 9 & 145 10 & 150 11 & 143 12 & 145 13 & 144 14 & 142 15 & 148 \end{matrix}$

What is the probability that a student has 98% or more attendance?

The attendance report of a class for 150 days is as follows:

$\begin{matrix} S t u d e n t & A t t e n d a n c e 1 & 146 2 & 142 3 & 147 4 & 149 5 & 146 6 & 145 7 & 147 8 & 146 9 & 145 10 & 150 11 & 143 12 & 145 13 & 144 14 & 142 15 & 148 \end{matrix}$

What is the probability that a student has 98% or more attendance?

The attendance report of a class for 150 days is as follows:

$\begin{matrix} Student & Attendance 1 & 146 2 & 142 3 & 147 4 & 149 5 & 146 6 & 145 7 & 147 8 & 146 9 & 145 10 & 150 11 & 143 12 & 145 13 & 144 14 & 142 15 & 148 \end{matrix}$

What is the probability that a student has 98% or more attendance?

Q. For the following distribution, calculate the range of data.

Class Interval	$116 - 125$	$126 - 135$	$136 - 145$	$146 - 155$	$156 - 165$	$166 - 175$
Frequency	$5$	$9$	$13$	$7$	$11$	$6$

Given below is the frequency distribution of the heights of 50 students of a class:

$\begin{matrix} C l a s s i n t e r v a l : & 140 - 145 & 145 - 150 & 150 - 155 & 155 - 160 & 160 - 165 F r e q u e n c y : & 8 & 12 & 18 & 10 & 5 \end{matrix}$
Draw a histogram representing the above data.

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Find the mean of the following frequency distribution:

The correct option is D 143

The correct option is D
143