Business Mathematics I
Homework 10
for
Math 115a, Section:
Instructor:
Date:
by
Team:
We, the undersigned, affirm that each of us participated fully and equally in the
completion of this assignment and that the work contained herein is original.
Furthermore, we acknowledge that sanctions will be imposed jointly if any part of this
work is found to violate the Student Code of Conduct, the Code of Academic Integrity, or
the policies and procedures established for this course.
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1. (Exercise 3 in Histograms) Copy the row of header cells in the sheet Sorted Data of
Sick Time.xls into the third sheet of the workbook. Scroll down in Sorted Data until you
reach data from the Suburban plant, then copy and paste all of those data into the
Suburban sheet.
2. (Exercise 5 in Histograms) A small business has kept records of the number of sales
per day and the gross daily sales for a period of 4 years. Since they are open 5 days a
week, except for two holiday weeks, they have records of 1,000 business days. These are
shown in the sheet Raw Data of the Excel file Daily Sales.xls. Open that file and sort the
data by “Day of Week.” (i) After sorting, use Copy and Paste to move records of the 200
Mondays into the sheet Monday of Daily Sales.xls. Repeat this process for records from
(ii) Tuesdays, (iii) Wednesdays, (iv) Thursdays, and (v) Fridays.
3. (Exercise 9 in Histograms) Refer to the data for the Suburban plant from the
worksheet Suburban in Sick Time.xls. (i) Compute the average number of hours of sick
time for workers at the Suburban plant. (ii) Compute the average cost per worker for sick
time at the Suburban plant.
4. (Exercise 14 in Histograms) (i) Referring to the data from Daily Sales.xls, compute
the average dollar amount per sale on Mondays through Fridays. (ii) Which day had the
largest average dollar amount per sale? (iii) Which day had the smallest average dollar
amount per sale?
**5.** (Exercise 15 in Histograms) (i) Compute the minimum, maximum, and average
values for the ratios of weekly closing prices on your team’s stock. (ii) Find the range of
values for your team’s ratios.
6. (Exercise 16 in Histograms) Go to the sheet Suburban in Sick Time.xls and create a
plot for the Suburban plant that is similar to the plot Sick Leave: Central Plant, which
was made for the Central plant.
7. (Exercise 18 in Histograms) (i) Referring to the data from the worksheet Tuesday in
Daily Sales.xls, create a histogram plot of the gross sales. (ii) Referring to the data from
the worksheet Friday in Daily Sales.xls, create a histogram plot of the gross sales.
**8.** (Exercise 20 in Histograms) Create a histogram plot of the ratios of adjusted
closing prices on your team’s stock data.