There are $150$ students in a class. Find the missing class interval frequency for the following table.

28

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14

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15

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21

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Solution

The correct option is A $28$
Total frequency $= 150$
The missing frequency for the class interval $= 150 - (14 + 21 + 13 + 10 + 15 + 20 + 4 + 25) \Rightarrow 150 - 122 \Rightarrow 28$
So, the missing class interval frequency is $28$ .

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Similar questions

Q. Marks of the 100 students are distributed in the grouped frequency distribution table.

Class marks (Marks)	150	160	170	180	190	200
No. of Students	23	14	16	11	21	15

What is the class interval for the group having frequency 11 ?

Q. Find the approximate value of mode for the following data

:

Class interval	$7 - 14$	$14 - 21$	$21 - 28$	$28 - 35$	$35 - 42$
Frequency	$2$	$4$	$3$	$10$	$1$

Q. Heights in cm of 12 students are given as:

154, 158, 155, 160, 165, 145, 148, 150, 147, 151, 166, 152

Make a frequency table taking 145-150 as first class interval.

CLASS INTERVAL
$0 - 7$	$7 - 14$	$14 - 21$	$21 - 28$	$28 - 35$	$35 - 42$	$42 - 49$
FREQUENCY
$19$	$25$	$36$	$72$	$51$	$43$	$28$

The arithmetic mean for the following frequency distribution is

Look at the following table below.
$\begin{matrix} Class Interval & Class mark 0 - 6 & a 6 - 12 & b 12 - 18 & 15 18 - 21 & 21 \end{matrix}$
The missing class marks $a$ and $b$ are respectively ____.

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There are 150 students in a class. Find the missing class interval frequency for the following table.

The correct option is A 28Total frequency =150The missing frequency for the class interval =150−(14+21+13+10+15+20+4+25)⇒150−122⇒28So, the missing class interval frequency is 28.

There are $150$ students in a class. Find the missing class interval frequency for the following table.

The correct option is A $28$
Total frequency $= 150$
The missing frequency for the class interval $= 150 - (14 + 21 + 13 + 10 + 15 + 20 + 4 + 25) \Rightarrow 150 - 122 \Rightarrow 28$
So, the missing class interval frequency is $28$ .