Video Transcript
The following histogram shows the
height ranges of plants. What is the modal class?
In this question, we are asked to
find the modal class of a given histogram representing the height ranges of
plants. To do this, we recall that in a
histogram the horizontal axis gives us the classes in our grouped frequency table
and the vertical axis tells us the frequency of those classes. We also recall that the modal class
is the class with the highest frequency. This means that we can find the
modal class from a histogram by identifying the class with the highest frequency,
which is the class with the highest bar.
We see that in the given histogram,
this is the class from 70 centimeters to 80 centimeters. We usually represent the classes
using the lower class bound. So, we have found that the modal
class of the given histogram is the class with lower class boundary 70.
