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Ex.5.1 Q3 Data Handling Solutions - NCERT Maths Class 8

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Question

The weekly wages (in \(\rm{Rs}\)) of \(30\) workers in a factory are:

\(830,\; 835,\; 890,\; 810,\; 835,\; 836,\; 869,\; 845,\; 898,\; 890,\; 820,\; 860,\; 832,\; 833,\; 855,\; 845,\; 804,\; 808,\; 812,\; 840,\; 885,\; 835,\; 835,\; 836,\; 878,\; 840,\; 868,\; 890,\; 806,\; 840.\)

Using tally marks, make a frequency table with intervals as \(800 – 810,\; 810 – 820\) and so on.

 Video Solution
Data Handling
Ex 5.1 | Question 3

Text Solution

What is known?

Weekly wages of \(30\) workers in Rupees.

What is unknown?

Frequency table of the weekly wages of \(30\) workers with intervals of \(10.\)

Reasoning:

Number of occurrences of the particular entry is known as frequency.

Steps:

The representation of data by frequency distribution table using tally marks is as follows:

Class Intervals

Tally Marks

Frequency

\(800\;–\;810\)

|||

\(3\)

\(810\;–\;820\)

||

\(2\)

\(820\;–\;830\)

|

\(1\)

\(830\;–\;840\)

|||| ||||

\(9\)

\(840\;–\;850\)

||||

\(5\)

\(850\;–\;860\)

|

\(1\)

\(860\;–\;870\)

|||

\(3\)

\(870\;–\;880\)

|

\(1\)

\(880\;–\;890\)

|

\(1\)

\(890\;–\;900\)

||||

\(4\)

Total

30

  
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