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# Statistics of One Variable

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I have attached several problems that I need solved.

Questions - u4
The questions are to be answered with full solutions. Be sure to focus on proper mathematical form, including:
1. One equal sign per line,
2. Equal signs in each question lined up vertically with each other,
3. No self-developed short form notations.
4. One step or idea per line,
5. Show complete solution to the given problem.
________________________________________
1. The following distribution gives the numbers of hours of overtime during one month for the employees of a company:
Overtime (h) 0 1 2 3 4 5 6 7 8 9 10
Employees 10 2 4 2 6 4 2 4 6 2 8
Display the data in a histogram.

2. The numbers of service calls a heating company made during the first ten days of November are listed below. Find the mean, median and mode for this set of data.
6, 28, 28, 11, 30, 21, 17, 28, 28, 20

3. The mean of the values 9, 11, 13, 21, 24, 18 and d is 17. Find the value of d. Show the steps you followed to solve for d.

5. When recommending five investments for you to consider, your financial planner mentions that the typical minimum investment is \$2 000 since the minimum investment amounts for the five funds being considered are: \$500, \$2 000, \$2 500, \$25 000 and \$ 2000 respectively. However, when you key these numbers into a calculator, you find the average minimum investments is in fact \$6 400. What a accounts for this discrepancy?