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Problem Value: 3 point(s). Problem Score: 0%. Attempts (3 points) Consider the following small data set. Subject x y 1 6 19 2 8 17 3 1421 4 8 31 5 6 17 Find the linear correlation coefficient. r= 0.008161756 Help Entering Answers Preview My Answers Submit Answers

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Related textbook solutions

Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

Related questions

Problem 1 (2 points). Every month a clothing store conducts an inventory and calculates the losses due to theft. The store would like to reduce these losses and is considering two methods to do so: the first is to hire a security guard and the second is to install cameras. The manager of the store has conducted the experiment: During the first 6 months he hired a security guard (method 1) and during the next 6 months he installed cameras (method 2). The monthly losses were reported as follows:

Security guard 350 289 407 398 470 259 Cameras 488 301 276 380 421 425

a/ Test with a=0.05 to determine whether there is enough evidence to conclude that expected monthly loss when installing cameras differs from 382. b/Since the cameras are cheaper than the guard, the manager would prefer to install the cameras unless there was enough evidence to infer that the guard was better. Conduct a hypothesis testing to advise what the manager should do? (Assuming equal variances and using a= 0.05)

Problem 2 (2 points). A supermarket chain performed a survey to help determine desirable locations for its new stores. The management of the chain wanted to know whether a linear relationship exists between weekly take home pay (s) and weekly food expenditures (y). A random sample of eight households produced the data shown in the following table Household 1 3 7 8 2 4 5 6 550 450 560 340 510 710 470 660

170 100 160 80 120 190 140 140 Y

a/ Find the least square regression line.

b/Perform the test Ho: Bi=0, H4: B10 (using a = 0.05) to determine whether there is enough evidence to infer that a linear relationship exists between weekly take home pay (s) and weekly food expenditures (y).

EX16_XL_CH05_GRADER_CAP_AS - Travel Expenses 1.3

Project Description:

You are the manager of an information technology (IT) team. Your employees go to training workshops and national conferences to keep up-to-date in the field. You created a list of expenses by category for each employee for the last six months. Now you want to subtotal the data to review total costs by employee and then create a PivotTable to look at the data from different perspectives.

Instructions:

For the purpose of grading the project you are required to perform the following tasks:

Step

Instructions

Points Possible

1

Start Excel. Open the downloaded Excel file named exploring_e05_grader_a1_Expenses.xlsx. Save the workbook as exploring_e05_grader_a1_Expenses_LastFirst, replacing LastFirst with your own name.

0.000

2

On the Subtotals worksheet, sort the data by Employee and further sort by Category, both in alphabetical order.

4.000

3

Use the Subtotals feature to insert subtotal rows by Employee to calculate the total expense by employee.

5.000

4

Collapse the Donaldson and Hart sections to show only their totals. Leave the other employees’ individual rows displayed.

5.000

5

Use the Expenses worksheet to create a blank PivotTable on a new worksheet named Summary. Name the PivotTable Categories.

8.000

6

Use the Category and Expense fields, enabling Excel to determine where the fields go in the PivotTable.

5.000

7

Modify the Values field to determine the average expense by category. Change the custom name to Average Expense.

4.000

8

Format the Values field with Accounting number type.

3.000

9

Type Category in cell A3 and change the Grand Totals layout option to On for Rows Only.

5.000

10

Apply Pivot Style Dark 2 and display banded rows.

Note, depending upon the version of Office being used, the style name may be Light Blue, Pivot Style Dark 2.

5.000

11

Insert a slicer for the Employee field, change the slicer height to 2 inches and apply the Slicer Style Dark 5. Move the slicer below the PivotTable.

Note, depending upon the version of Office being used, the style name may be Light Blue, Slicer Style Dark 5.

5.000

12

Use the Expenses worksheet to create another blank PivotTable on a sheet named Totals. Add the Employee to the Rows and add the Expense field to the Values area. Sort the PivotTable from largest to smallest expense.

10.000

13

Change the name for the Expenses column to Totals and format the field with Accounting number format.

4.000

14

Insert a calculated field to subtract 2659.72 from the Expense field. Format the field with the custom name Above or Below Average and apply Accounting number format to the field.

10.000

15

Set 12.25 width for column B and column C, change the row height of row 3 to 30, and apply word wrap to cell C3.

4.000

16

Create a clustered column PivotChart from the PivotTable. Move the PivotChart to a new sheet named Chart. Hide all field buttons in the PivotChart, if necessary.

Note, Mac users, select the range A3:C8 in the PivotTable. On the Insert tab, click Recommended Charts, and then click Clustered Column to make the chart.

10.000

17

Add a chart title above the chart and type Expenses by Employee. Change the chart style to Style 14.

6.000

18

Apply 11 pt font size to the value axis and display vertical axis as Accounting with zero decimal places.

4.000

19

Create a footer on all worksheets with your name in the left section, the sheet name code in the center section, and the file name code in the right section.

3.000

20

Ensure that the worksheets are correctly named and placed in the following order in the workbook: Subtotals, Summary, Chart, Totals, Expenses. Save the workbook. Close the workbook and then exit Excel. Submit the workbook as directed.

0.000
 

Total Points

100.000

https://www.dropbox.com/s/m7falnl85tfazl9/Torres%20DaSilva_exploring_e05_grader_a1_Expenses.xlsx?dl=0

 
 

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