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 :
A. upper limits of the classes
B. lower limits of the classes
C. class marks of the classes
D. upper limit of preceding classes
Answer:C
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 :
A. upper limits of the classes B. lower limits of the classes C. class marks of the classes D. upper limit of preceding classes