Graphical Representation of Data

Author:M L Aggarwal
9th CBSE
IMPORTANT

Important Questions on Graphical Representation of Data

MEDIUM
IMPORTANT

For drawing a frequency polygon of a continuous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abscissae are respectively:

MEDIUM
IMPORTANT

In a frequency distribution, the mid-value of a class is 10 and the width of the class is 6. The lower limit of the class is

EASY
IMPORTANT

The class mark of the class 90120 is

EASY
IMPORTANT

 The class mark of the class 1624 is _____.