Test: Graphical Representation Of Data

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Description

This mock test of Test: Graphical Representation Of Data for Class 9 helps you for every Class 9 entrance exam. This contains 5 Multiple Choice Questions for Class 9 Test: Graphical Representation Of Data (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Graphical Representation Of Data quiz give you a good mix of easy questions and tough questions. Class 9 students definitely take this Test: Graphical Representation Of Data exercise for a better result in the exam. You can find other Test: Graphical Representation Of Data extra questions, long questions & short questions for Class 9 on EduRev as well by searching above.

QUESTION: 1

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

A.
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.
B.
Obtain the frequency distribution and draw a histogram representing it.
C.
Join these mid-points of the adjacent rectangles of the histogram by dotted line
D.
Obtain the mid points of the upper horizontal side of each rectangle.

Solution:

QUESTION: 2

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

A.
Frequency polygon
B.
Histogram
C.
Bar graph
D.
Pie chart

Solution:

QUESTION: 3

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

A.
32
B.
34
C.
26
D.
30

Solution:

QUESTION: 4

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

A.
30
B.
20
C.
25
D.
35

Solution:

A frequency polygon is made by joining the mid points of each bar of a histogram along with 2 imaginary class intervals. Hence, for any point on a frequency polygon the y co-ordinate is the frequency and x co - ordinate is the Class Mark of the interval. In this case, the class mark of the interval 20-30 is 25.

QUESTION: 5

Following table gives marks and number of students of a class: