Question

An industrial organisation gives an aptitude test to all applicants for employment. The results of 150 people taking the test were. How can I draw a histogram to represent this information and What percentage of the applications scored between 60.5 and 90.5 ?

Answer 1

By definition, a histogram is:

So, in the x-label, we are going to find the interval of scores, and in the y-label, we are going to find the frequency of the scores.

Let's draw the histogram with the given data:

Now, people taking the test were 150. To find, the percentage of the applications scored between 60.5 and 90.5, we need to divide the number of people scored between these two values by the total number of people, so:

`\%_(60.5-90.5)=(20+10+6)/(150)=(36)/(150)=0.24*100\%=24\%`

The percentage is 24%.