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 and the width of the class is . The lower limit of the class is

EASY
IMPORTANT
The class mark of the class is

EASY
IMPORTANT
The class mark of the class is _____.

