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Data Handling

Long Answer Type

Following are the marks scored by 30 students in a test out of 40 marks. Using tally marks prepare a frequency table:

30	18	27	15	25	28	15	30
35	36	25	30	20	28	17	30
36	35	35	18	30	17	30
25	36	28	25	25	18	16

1341 Views

2. Present the following data in the form of a grouped frequency distribution table having 6 classes of equal size (one of the class being 40–48):

30	39	58	17	34	50	23	37
42	49	55	59	19	28	47	49
18	60	56	36	58	35	55	37
25	34	39	61	53	33	36	53
61	62	39	53	21	18	28	23

1287 Views

Short Answer Type

Draw an appropriate graph to represent the given information.

762 Views

4. Draw an appropriate graph to represent the given information.

1200 Views

Long Answer Type

5. Draw an appropriate graph to represent the given information.
Percentage wins in ODI by 8 top cricket teams.

1254 Views

Short Answer Type

6. A group of students were asked to say which animal they would like most to have as a pet. The results are given below:
dog, cat, cat, fish, cat, rabbit, dog, cat, rabbit, dog, cat, dog, dog, dog, cat, cow, fish, rabbit, dog, cat, dog, cat, cat, dog, rabbit, cat, fish, dog.
Make a frequency distribution table for the same.

305 Views

Long Answer Type

7. Study the following frequency distribution table and answer the questions given below.
Frequency distribution of daily income of 550 workers of a factory

(i) What is the size of the class intervals?
(ii) Which class has the highest frequency?
(iii) Which class has the lowest frequency?
(iv) What is the upper limit of the class interval 250-275?
(v) Which two classes have the same frequency?

1485 Views

Short Answer Type

8. Construct a frequency distribution table for the data on weights (in kg) of 20 students of a class using intervals 30–35, 35–40 and so on.

40,	38,	33,	48,	60,	53,	31,
46,	34,	36,	49,	41,	55,	49,
65,	42,	44,	47,	38,	39

993 Views

9. Observe the histogram figure and answer the questions given below:

(i) What information is being given by the histogram?
(ii) Which group contains maximum girls?
(iii) How many girls have a height of 145 cm and more?
(iv) If we divide the girls into the following three categories, how many would there be in each?
150 cm and more -Group A
140 cm to less than 150 cm -Group B
Less than 140 cm -Group C

782 Views

10.

For which of these would you use a histogram to show the data?
(a) The number of letters for different areas in a postman’ bag.
(b) The height of competitors in an athletics meet.
(c) The number of cassettes produced by 5 companies.
(d) The number of passengers boarding trains from 7:00 a.m. to 7:00 p.m. at a station.
Give reasons for each.

201 Views

30	18	27	15	25	28	15	30
35	36	25	30	20	28	17	30
36	35	35	18	30	17	30
25	36	28	25	25	18	16

30	39	58	17	34	50	23	37
42	49	55	59	19	28	47	49
18	60	56	36	58	35	55	37
25	34	39	61	53	33	36	53
61	62	39	53	21	18	28	23

30	18	27	15	25	28	15	30
35	36	25	30	20	28	17	30
36	35	35	18	30	17	30
25	36	28	25	25	18	16

30	39	58	17	34	50	23	37
42	49	55	59	19	28	47	49
18	60	56	36	58	35	55	37
25	34	39	61	53	33	36	53
61	62	39	53	21	18	28	23

30	18	27	15	25	28	15	30
35	36	25	30	20	28	17	30
36	35	35	18	30	17	30
25	36	28	25	25	18	16

30	39	58	17	34	50	23	37
42	49	55	59	19	28	47	49
18	60	56	36	58	35	55	37
25	34	39	61	53	33	36	53
61	62	39	53	21	18	28	23