According to the given data the five number summar would be the following:
The minimum is always the first number of a sorted data.
Therefore, in this case the minimun of the histogram is 1.
The first quartile is the median of the lower half of the data set, therefore, if the half of the 76 numbers is 38, the first quartile is 16.
The median in this is 38 because we have 76 numbers, therefore if the median is the half of all the numbers set, that means the median of 76 is 38.
To find The third quartile you have to look at the median between the numbers 38 and 76, So, that would be 57
Finally, the maximum number is the highest number of cup of coffes sold, and according to this set is 76, so the maximum number is 76.