For each assignment, you will use one of the MINITAB data sets. For this first assignment, detailed instructions are provided. For all lab assignments, please follow the instructions carefully, include all printouts and a typewritten summary of findings answering all questions that are posed in the assignment.
All lab assignments should be placed in a 3-ring binder or folder, not handed in loosely.
Each assignment is to be done independently with no assistance from classmates or peers. You may seek help from me through questions in class or by coming to my office. Monitors in the lab are available for assistance with MINITAB and computer related questions.
Grades will be based on effort, accuracy, neatness, organization,
clarity of explanations, and following directions.
For this assignment you will use the RESTRNT.MTW data set.
-Print a copy of the description of your data set from MINITAB. This should be the first entry in your folder.
Click on help> help
-Open the restrnt data file
click on file>open
worksheet
-Perform Descriptive Statistics (Sales, Wages, Full time
employees)
click on stat>basic
stat>display descriptive statistics
Repeat for Wages and Full-time employees
Notice that owner and typefood are coded with numbers.
-Recode the owner variable.
click on
data>code>numeric
to text
-Recode the typefood variable
-Perform Descriptive Statistics for Sales by typefood
click on stat>basic
stat>display descriptive statistics
-Perform Descriptive Statistics for Sales by owner
(Repeat the
steps above replacing typefood with owner)
Perform Descriptive Statistics for Wages by owner
(Repeat the
steps above replacing appropriate variables)
Perform Descriptive Statistics for Wages by typefood
(Repeat the
steps above replacing appropriate variables)
-Create Boxplots, Pie Charts, and Histograms
- click on graph>histogram
(you do not have to save the
graph) - repeat the above
steps for wages
- click on graph>boxplot
- repeat for
sales by owner
- click on
graph>pie chart
-to print the session window
click anywhere
in the session window to highlight the bar at the top of the window
DO NOT PRINT THE WORKSHEET (DATA)!
Please include in your folder the following:
-the data set description from the help menu.
1. What percent of the restaurants are fast
food?
2. What percent of the restaurants are corporations?
3. What were the sales in 1979 of the lowest
earning restaurant?
4. What is the average gross sales?
5. What is the average sales among the supper
clubs?
6. What is the average wage paid by corporations?
7. What is the average sales among the partnership
restaurants?
8. Fifty percent of the restaurants earn less
than what amount in sales?
9. The upper 25% of the sales are above _________.
10. Seventy-five percent of wages are below _____________.
11. The lower 25% of the sales are below _________. 12.
The middle 50% of the fast food restaurants have sales between _________ and
_______. 13. What is the highest amount of sales earned?
By what type of restaurant? (type of food?, type of ownership?)
14. What is the highest wage earned? By what type of
restaurant? (type of food?, type of ownership?) 15.
Which type of ownership has the greater number of outliers among sales?
16. Use the descriptive statistics to determine which values of Sales are
considered outliers for the Partnership restaurants (show your work).
16. Discuss why there is a 4th boxplot for "owner"? What does this
represent or imply to you?
Double Click data sets in the left window
Double Click sample data sets
Scroll down to find RESTRNT.MTW
; double click
click on Print
close the
help window
click on "Look in Minitab Sample Data Folder" at the bottom of the window
double click on restrnt.MTW
click ok
double click sales in left hand box to put it in variables box
click OK
We need to recode these into text so that one can more
easily determine the type of ownership and type of food for the restaurants.
double click on owner to put it in the 'Code Data from Colums' window
double click on owner to put it in the 'Store coded data in colums' window
type 1 in the Original Values window, tab over, type proprietorship in
New window
type 2 in the Original Values window, tab over, type partnership in New
window
type 3 in the Original Values window, tab over, type corporation in New
window
click OK
repeat the
above steps replacing owner with typefood
type 1, 2,
3 as Original Values and type the corresponding type of food names in the
New windows (use your description sheet for this)
double click sales in left hand box to put it in variables box
click in the BY VARIABLE window
double click typefood
click OK
double click
on Simple
double click on the variable
(Sales)
click OK
right click on the
graph window
click on
add>subtitle (or footnote) then type your name in the window that appears
Note: this puts your name in the graph window
click printer
to print graph window
close graph
window by clicking on the X in the upper right hand corner of graph window
double click
on Simple
double click sales
click OK
repeat the steps above to
enter your name in the graph window
print and close graph window
click on graph>boxplot double click
on Simple
double click sales
click multiple graphs
click by
variables
Click in top window labeled By variable with groups in separate panels
double click owner
click OK, click OK
put your name in the graph
print and
close graph window
click in the Categorical Variable window
double click typefood to put it in the window
click OK
put your name in the graph
print and close graph window
click on printer
icon.
click ok
If you click the printer when
the worksheet window is highlighted, it will be printed. I do not want
this included.
-the session window with your descriptive statistics.
-each of the graph windows printed above.
-clearly written statements (complete sentences) answering
the following questions: