Problems from Bars diagram and Polygon of frequencies

In a survey to $20$ students on the number of cousins they have on their mother's side, the obtained answers are: $1, 4, 2, 3, 0, 4, 1, 3, 2, 5, 4, 3, 5, 2, 2, 0, 3, 1, 4, 5,$

Make a table with the absolute frequency and the bar graph.

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Development:

Number of cousins	Absolute frequency $f_{i}$
$0$	$2$
$1$	$3$
$2$	$4$
$3$	$4$
$4$	$4$
$5$	$3$
$\sum$	$20$

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Solution:

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