Question

The bar graph equivalent to a grouped frequency table is called .

Answer 1

Bar graphs are represented using rectangles.

Each rectangle corresponds to each category of the data set, whose height represents the frequency of the respective category in the given data set.

Similarly, when data is in grouped format, the range intervals are plotted on the horizontal axis, and the vertical axis represents the frequency corresponding to each interval range.

Here, each rectangle corresponds to each range interval of the data set, whose height represents the frequency of the respective range interval in the given data set.

Consider the data of number of students in a community with respect to their ages: Age Groups Number of Students

$0\le \text{Age}<10$	$45$
$10\le \text{Age}<20$	$105$
$20\le \text{Age}<30$	$40$

The corresponding histogram is as follows: