Question

The number of chickens in a farm house with respect to their weight are as follows:
Weight (kg) Number Chickens

$0\le \text{Weight}<2$	$30$
$2\le \text{Weight}<4$	$40$
$4\le \text{Weight}<6$	$20$

When this data is plotted on a histogram, the height of the bar corresponding to the medium-weight range chickens is units.

Answer 1

Histograms are plotted from a grouped frequency table.

Each rectangular bar corresponds to each range interval of the data set, whose height represents the frequency of the respective range interval in the given data set.

Here, the medium-weight range chickens lie in the interval $2-4$ kg.
The corresponding frequency is $40.$

$\therefore$ The height of the rectangular bar for $2-4$ kg chickens is $40$ units.

The histogram is as follows: