Assignment:
A random sample of 91 employees of Eastern Electric Co. showed that the number of days missed by each worker last year due to illness was as follows:
Days Missed Frequency
0 to 4 17
5 to 9 51
10 to 14 18
15 to 19 4
20 to 24 1.
Use the midpoints of the class intervals to estimate the mean of the set of data.
Provide complete and step by step solution for the question and show calculations and use formulas.