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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

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


Using tally marks, the required frequency is as given below:


1341 Views

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


The highest observation = 61.
The lowest observation = 17.
One of the class intervals = 40–48.
Class size = Upper class limit - Lower class limit = 48 – 40 = 8
∴ The appropriate classes can be:
16–24, 24–32, 32–40, 40–48, 48–56, 56–64
Thus, the frequency distribution table for the above data can be:

1287 Views

Read the following circle graph and answer the questions given below:
(i) In which age group are the maximum number of people?
(ii) How many people are there is the ‘0-14 years’ group?
(iii) Find the central angle of the sector corresponding to the age group ‘15-60 years'.



Detailed solution not provided.
Ans. (i) 15-60 years
        (ii) 30 thousand
        (iii) 180 degree

87 Views

Read the following circle graph and answer the questions given below:
The time spent by a child during a day:
(i) On which activity maximum number of hours are spent?
(ii) On which two activities does he spend equal number of hours?
(iii) Find the central angles for each sector of activities.

Detailed solution not provided.
Ans. (i) Sleep
        (ii) Play and others
         (iii Sleep 120 degree, school 90 degree, how work <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array)
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#6 {main}</pre>; play 45 degree, others 45 degree

88 Views

On a particular day, the sales (in rupees) of different items of a store are given below:
Draw a pie-chart for the above data.

The total sale is 180°.
First we convert the sales of various items into central angles.


Now, the required pie chart is given below:


401 Views