Construct a combined histogram and frequency polygon for the foll… - Vidyadip

Question

Construct a combined histogram and frequency polygon for the following frequency distribution:

Class$-$Intervals	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$
Frequency	$3$	$5$	$6$	$4$	$2$

✓

Answer

Steps:$1.$ Draw a histogram for the given data.
$2.$ Mark the mid$-$point at the top of each rectangle of the histogram drawn.
$3.$ Also, mark the mid$-$point of the immediately lower class$-$interval and mid$-$point of the immediately higher class$-$interval.
$4$. Join the consecutive mid$-$point marked by straight lines to obtain the required frequency polygon.
$5$. The require combined histogram and frequency polygon are shown in the following figure:

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