Given is the working hours of employees of an institute- Draw a frequency plot of data-Whine working hours - people IIlhline 4-5 - 20 Whhe5-6 - 2511 hline6-7 - 7 - llhline7-8 - 25 llthe 8-9 - 13 llhline9-10 - 9lllhline lend array -4 MARKS-

Tabular form: 1 Mark Graph: 3 Marks [ working hours amp; class mark amp; people; 4 5 amp; 4.5 amp; 20; 5 6 ...

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Given is the working hours of employees of an institute. Draw a frequency plot of data.

$\begin{matrix} working hours & people 4 - 5 & 20 5 - 6 & 25 6 - 7 & 7 7 - 8 & 25 8 - 9 & 13 9 - 10 & 9 \end{matrix}$
[4 MARKS]

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Given is the working hours of employees of an institute. Draw a frequency plot of data.

$\begin{matrix} w o r k i n g h o u r s & p e o p l e 4 - 5 & 20 5 - 6 & 25 6 - 7 & 7 7 - 8 & 25 8 - 9 & 13 9 - 10 & 9 \end{matrix}$
[4 MARKS]

Given is the working hours of employees of an institute. Draw a frequency plot of data.

$\begin{matrix} working hours & people 4 - 5 & 20 5 - 6 & 25 6 - 7 & 7 7 - 8 & 25 8 - 9 & 13 9 - 10 & 9 \end{matrix}$
[4 MARKS]

The marks awarded for an assignment set for a class of 20 students were as follows:
6 7 5 7 7 8 7 6 9 7 4 10 6 8 8 9 5 6 4 8

The frequency table for this data is:

\begin{matrix} N o . o f h o u r s & N o . o f c h i l d r e n 0 - 5 & 7 6 - 10 & 11 11 - 15 & 15 16 - 20 & 9 21 - 25 & 8 \end{matrix}

If the mean of the following frequency distribution is $7.5,$ find the missing frequency $f .$

$\begin{matrix} V a r i a b l e & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 F r e q u e n c y & 20 & 17 & f & 10 & 8 & 6 & 7 & 6 \end{matrix}$

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