homework set graphs

MGT 410

Homework Set 3

Provide a short answer to each of the following questions.

1. Use a cause and effect diagram to develop a list of potential causes for each of the following:

a. Failure shoot a basket in the basketball goal.

b. You consistently over spend grocery shopping.

c. You consistently ding your car door when parking.

d. Your TV remote fails to function properly.

2. Prepare a flow chart for taking a vacation driving from New York to Orlando. There will be 4 people in the vehicle with 3 drivers. Discuss areas for improvement revealed by the flow chart.

3. You have collected the following data from customer comment cards at your restaurant. Construct a Pareto diagram to show which of the problems should be investigated first. Show the cumulative frequency line on your diagram.

Comment Frequency

Dirty dishes 15

Dirty silverware 25

Inattentive service 80

Cold food 19

Wrong order 10

Overpriced 26

Long wait 12

4. Use the following data to construct a scatter diagram. Does there appear to be a relationship between hours of overtime and number of rejects? Discuss.

Hours of Overtime Number of Rejects

125 37

86 22

59 32

16 4

100 90

86 59

72 14

33 82

84 91

56 13

5. Your boss has asked you to evaluate the reject percentage for the past year on one of the production lines. Use the following data to construct a run chart. Does there appear to be a pattern in the change in reject rate over the year?

Month Reject %

January 1.7

February 1.6

March 2.2

April 2.5

May 2.3

June 3.0

July 2.7

August 3.3

September 3.5

October 3.1

November 3.3

December 3.7