You may work in groups on this assignment, but each student should use a separate computer and hand in a separate set of papers. The sheets that you hand in must contain your name only. If you have trouble, talk to a friend, talk to the Math Lab attendant, or come to see me. You may wish to bring your textbook with you to the Lab, since we will be making some graphs which will be almost identical to some of the graphs in your book. If you forget your book, you should still be able to do this lab, however. Please study what you are doing, since we may have additional lab exercises in the future. The experience you gain in this lab exercise may help you when you do future lab exercises. Detailed instructions follow.

1. Start MINITAB. Instructions for doing this are available in my "Math 321 Computer Lab Guidelines" handout. This handout is available in my office as well as on my Web site (http://www.und.nodak.edu/instruct/lapeters).
2. We begin by typing in some data. We will use the data from Example 1.1 of our textbook. In the "Worksheet 1" window, in the shaded box just below the box labeled "C1," type the word "temp," (without the comma or the quotation marks), and press enter. Now enter the following data into the boxes in column C1, starting with Row 1 and ending with Row 36. It may be helpful to set "Num Lock" and use the keypad on the extreme right-hand side of the keyboard.

   	84		49		61		40		83		67		45		66		70		69		80		58
   	68		60		67		72		73		70		57		63		70		78		52		67
   	53		67		75		61		70		81		76		79		75		76		58		31

3. Warning: If you shut off MINITAB, you may lose the data that you just typed in. But I think that you can complete this lab exercise in one MINITAB session, so you should not have to worry about this problem.
4. Click on Graph->Dotplot->Simple->OK. (To do this, follow the menus in the obvious way. If you have a question, ask a friend, ask the Lab attendant, or come and see me.) In the "Graph variables" box, type "temp," without the comma or the quotation marks. Then click on "OK." MINITAB should construct a dotplot for you.
5. Now change the position of the tick marks. Do so as follows. Click on Editor->Select Item->X Scale. Then click on Editor->Edit X Scale. Then click on "Position of ticks." In the box that immediately follows, delete any text that may already appear, and type in the numbers "30 40 50 60 70 80," without the quotation marks and without any commas. Finally, click on "OK," and then click on the word "temp" just below your dotplot. The dotplot should now look like the dotplot in Figure 1.5 on page 11 of your textbook.
6. Print your dotplot. To do this, begin by clicking on File->Print Graph->OK. The computer will prompt you for a name for your print job. Type in your name and click on "Print." Then go over to the Math Computer Lab attendant, show him or her your university ID card (U Card), and explain that you would like to pick up your print output. The attendant may ask for the name of your print job. He or she will deduct a few cents from your U-Card account.
7. Now make a stem-and-leaf diagram as follows. Click on Graph->Stem-and-Leaf. Then type "temp" as your graph variable (without the quotation marks), and then click on "OK." The "Session" window should now contain a stem-and-leaf display matching the one in Figure 1.1 on page 5 of your textbook. Do not print the stem-and-leaf diagram. Instead, go on to the next step.
8. Now make a histogram as follows. Click on Graph->Histogram->Simple->OK. Use "temp" (without the quotation marks) as your graph variable, and then click on "OK." You should get a new window named "Histogram of temp." The histogram should be similar to, but slightly different from, the one in Figure 1.1 in our textbook. We need to adjust it.
9. Click on Editor->Select Item->X Scale. Then click on Editor->Edit x Scale. Then click on "Position of ticks." In the box to the right, delete any text that may already appear, and type the numbers "25 35 45 55 65 75 85," without the commas or quotation marks. Then click on "OK."
10. Click on Editor->Edit X Scale. Then click on "Binning." Click on "Number of intervals," delete any text that appears in the box, and replace it with the number 6. Then click on "OK." The histogram should now be very similar to the one in Figure 1.1, but still slightly different from it.
11. Click on Editor->Select Item->Y Axis Label. Then click on Editor->Edit Y Axis Label. In the text box, delete the word "Frequency" and replace it with "Percent" (without the quotation marks). Then click on "OK."
12. Click on Editor->Select Item->Y Scale. Then click on Editor->Edit Y Scale->Type. Then click on "Percent" and finally "OK." The histogram should now look like the one in Figure 1.1 on page 5 of your textbook.
13. Finally, print your histogram. To do this, click on any part of the window that contains the histogram. Then click on File->Print Graph->OK. Continue with the earlier procedure involving the print job name, the U Card, and the Math Lab attendant.
14. After you complete the above steps, shut MINITAB down. Do this by clicking on File->Exit->No.
15. Write your name on your dotplot and histogram, and hand them in by the announced due date. You may work in groups, but the sheets that you hand in must contain your name only.