Use the data given below to answer the following questions).
Following is an extract from the Employee Payroll Database of HFR Informatics Inc.
-16) While constructing a histogram, how is group width calculated?
A) number of groups × lower limit of the last group + upper limit of the first group)
B) upper limit of the last group – lower limit of the first group) / number of groups
C) upper limit of the first group + number of groups) × lower limit of the last group + number of groups)
D) lower limit of the first group – number of groups) × upper limit of the last group