Data Handling Maths - Data Handling

The weekly wages (in rupees) of 28 workers of a factory are given below:
668, 610, 642, 658, 668, 620, 719, 720, 700, 690, 710, 642, 672, 654, 692, 706, 718, 702, 704, 678, 615, 640, 680, 716, 705, 615, 636, 656.
Construct a frequency table with equal class intervals, taking the first of the class intervals as 610-630, where 630 is not included.

A dice was thrown 30 times and the following outcomes were noted:
2, 1, 2, 4, 6, 1, 2, 3, 6, 5, 4, 4, 3, 1, 1, 3, 1, 1, 5, 6, 6, 2, 2, 3, 4, 2, 5, 5, 6, 4.
Prepare a frequency table.

The number of members in 20 families are given below:
4, 6, 5, 5, 4, 6, 3, 3, 5, 5, 3, 5, 4, 4, 6, 7, 3, 5, 5, 7.
Prepare a frequency distribution of the data.

The following data gives the number of children in 40 families:
1, 2, 6, 5, 1, 5, 1, 3, 2, 6, 2, 3, 4, 2, 0, 4, 4, 3, 2, 2, 0, 0, 1, 2, 2, 4, 3, 2, 1, 0, 5, 1, 2, 4, 3, 4, 1, 6, 2, 2.
Represent it in the form of a frequency distribution.

The daily earnings (in rupees) of 24 stores in a market was recorded as under:
715, 650, 685, 550, 573, 530, 610, 525, 742, 680, 736, 524, 500, 585, 723, 545, 532, 560, 580, 545, 625, 630, 645, 700.
Prepare a frequency table taking equal class sizes. One such class is 500-550, where 550 is not included.

Draw a histogram for the frequency distribution of following data:

Class interval	8-13	13-18	18-23	23-28	28-33	33-38	38-43
Frequency	320	780	160	540	260	100	80

Hint. Take 1 small division = 10.

Draw a histogram for the frequency distribution of following data:

Class interval	20-25	25-30	30-35	35-40	40-45	45-50
Frequency	30	24	52	28	46	10

Draw a histogram for the following data:

Class interval	600-640	640-680	680-720	720-760	760-800	800-840
Frequency	18	45	153	288	171	63

Hint. Take 1 small division = 3.

The top speeds of 30 different land animals have been organised into a frequency table given below:

Maximum speed (in km/ h)	10-20	20-30	30-40	40-50	50-60	60-70
Number of animals	3	5	10	8	0	2

Draw a histogram for the given data.

The following table shows the number of illiterate persons in the age group (10–58 years) in a town. Represent the given data by means of a histogram.

Age group (in years)	10-18	18-26	26-34	34-42	42-50	50-58
Number of illiterate persons	175	325	100	150	250	525

Hint. Take 1 small division = 5 persons.

Look at the histogram given below and answer the question that follow:

1. How many students have height more than or equal to 135cm but less than 150cm?
2. Which class interval has the least number of students?
3. What is the class size?
4. How many students have height less than 140cm?