Question

(i) The daily wages (in) of 30 workers in a factory are :
365, 335, 315, 339, 308, 355, 341, 367 322, 335, 47, 305, 332, 379,
386, 306, 312, 335, 345, 368, 370, 384, 34333, 36967, 335, 346,
336, 388
Using tally marks, make a frequency table wita intervals as 300 - 310,
310 -- 320 and so on. Draw arstogram for the frequency table so
formed.​

Answer 1

It is a frequency table and the graph is under the table

Step-by-step explanation:

Here's you answer.

Hope it will help you

Answer 2

Concept

The number of times an occurrence or a value happens is referred to as frequency. A frequency table is a collection of things with the number of times they appear in the table.

Given

Daily wages of 30 workers:

365, 335, 315, 339, 308, 355, 341, 367 322, 335, 347, 305, 332, 379, 386, 306, 312, 335, 345, 368, 370, 384, 343, 333, 369, 367, 335, 346, 336, 388

Find

1) Frequency table with class interval=10.

2) An histogram for the frequency table so formed.​

Solution

Step-by-step explanation;

1) Draw a table with 3 columns, labelling them Class Intervals (Wages), Tally marks and Frequency (Number of Workers), respectively.

2) In the first column labelled 'Class intervals', list down the intervals with a difference of 10 units, i.e., 300-310, 310-320, 320-330, ..... 380-390.

3) A tally mark is put, in the second column labelled 'Tally marks' against the class intervals for every observation (as shown in the table).

4) Counting the number of tally marks against each interval, the frequency is noted in the third column.

Drawing the histogram

1) Taking No. of workers on the y-axis and Wages on the x-axis, a histogram is drawn using the frequency table.

2) Taking scale for x-axis as $1cm = 1 worker$ and scale for y- axis as $1cm = 10$

3) Draw a histogram taking the data corresponding to the frequency. (As shown in the graph).