Graphical Representation of Data

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. Following bar chart represents the number of children in a family:
Which family has number of children 3?

5

4

6

3

Question 1 of 20

2. Observe the given bar graph and choose the correct option for: the year in which the difference of the values of export and import is minimum.

1985-86

1986-87

1982-83

1984-85

Question 2 of 20

3. Following table gives marks and number of students of a class.
Which point on the frequency polygon will have its y coordinate as 19?

(30,19)

(20,19)

(35,19)

(25,19)

Question 3 of 20

4. In order to draw a frequency polygon by using a histogram, which of the following statements is incorrect?

Obtain the mid-points of three class- intervals of highest frequency on Y-axis, one adjacent to the first on its right and one adjacent to the last, on its left.

Obtain the frequency distribution and draw a histogram representing it.

Join these mid-points of the adjacent rectangles of the histogram by dotted line

Obtain the mid points of the upper horizontal side of each rectangle.

Question 4 of 20

5. The bar graph represents the number of persons in various age groups in a town. The total population of the town is

2700

1300

6700

1400

Question 5 of 20

6. In the above frequency distribution, the adjusted frequency of the fourth class interval is

5

2

10

3

Question 6 of 20

7. A graphical representation of a frequency distribution in the form of rectangles with class interval as bases and heights proportional to corresponding frequencies such that there is no gap between any two successive rectangles is called a

Frequency polygon

Histogram

Bar graph

Pie chart

Question 7 of 20

8. The following bar graph shows the results of an annual examination in a secondary school. Choose the correct option for: The pair of classes in which the results of boys and girls are inversely proportional are:

VIII, X

VI, VIII

VIII, IX

VI, IX

Question 8 of 20

9. A frequency polygon is drawn for the following data. So the x-coordinate of the point having y coordinate as 21 is

30

20

25

35

Question 9 of 20

10. The following histogram shows the data concerning age in years of workers in a factory.
How many workers are in the age group of 17-19?

4

5

6

7

Question 10 of 20

11. The ages of 50 teachers working in a secondary school in a big city are as represented by a histogram as follows.
Which of the following frequency tables corresponds to the given histogram?

A

B

C

D

Question 11 of 20

12.

5

3

6

2

Question 12 of 20

13. What is the maximum number of children in a family ?

3

5

6

4

Question 13 of 20

14. The given graph shows a frequency curve. What is the frequency of the class 160-180?

90

60

50

40

Question 14 of 20

15. The following bar graph shows the results of an annual examination in a secondary school. Choose the correct option for: The class having the lowest pass rate of students

IX

VIII

VI

VII

Question 15 of 20

16. In a frequency distribution, the class-width is 4 and the lower limit of first class is 10. If there are six classes, the upper limit of last class is

32

34

26

30

Question 16 of 20

17. In a frequency distribution table, the class interval 150-160 is attached with the frequency 15. So the point on the frequency polygon corresponding to this is

(150,15)

(160,15)

(165,15)

(155,15)

Question 17 of 20

18. The population of students of four major cities in India in a particular year is given below:
Choose the correct representation of the bar graph to represent the above data

A

B

C

D

Question 18 of 20

19. Which of the following statements is incorrect

For drawing a histogram of a continuous grouped frequency distribution with unequal class intervals, you have to compute the adjusted frequencies of each class.

For a given frequency distribution, a frequency polygon can be drawn without using a histogram

To construct a histogram, you have to construct rectangles with class intervals as bases and respective frequencies as heights

The formula for computing the adjusted frequencies is {Maximum class size /class mark} x frequency of the class.

Question 19 of 20

20. Following table gives marks and number of students of a class:
Which point on the frequency polygon will have its y coordinate as 21?

(45, 21)

(20, 21)

(25, 21)

(35, 21)

Question 20 of 20

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