Minitab Lab #1 Math 120 Nguyen 1 of 7

Transcription

1 Minitab Lab #1 Math 120 Nguyen 1 of 7 Objectives: 1) Retrieve a MiniTab file 2) Generate a list of random integers 3) Draw a bar chart, pie chart, histogram, boxplot, stem-and-leaf diagram 4) Calculate the basic statistics for a sample Note: In the following instructions underlined words indicate what information you type in. A. Steps to start the MINITAB program: IMPORTANT: Do the following command only once. Please be patient. It can take MiniTab awhile to load when everyone is starting Minitab at the same time. Click on: Start All Programs Minitab 14 For Windows Minitab 14 B. Steps to open (or retrieve) a saved project: 1. Click on: File Open Project In the Open Project window: a. Click on the down arrow in the Look-in: box and select the K: drive > NatrlSci folder > GNguyen b. Double click on the file: Lab One.MPJ On the next page you can see the screen that should appear after you double clicked. The window on the right should appear. This file contains the information for a random sample of 50 students. C. Steps to save your project: 1. Click on: File Save Project As In the Save Project As window: a. In the Save in: box, select the H: drive b. In the File Name box, type: Lab One your name c. Click on the Save button

2 Minitab Lab #1 Math 120 Nguyen 2 of 7 D. Steps to draw a bar chart of the variable, Gender 1. Click on: Graph Bar Chart In the Bar Charts window: a. For the Bars represent box, select Counts of unique values b. Click on the Simple button In the Bar Chart Counts of unique values, Simple window: a. Double click on C2 GENDER in the box on the left to pump this variable to the Categorical variables box on the right. You should see the histogram displayed to the right. 2. To insert your name on the and print it: a. Right-click on the title, select Add select Title type in your name following the title b. Print the Graph: The bar should be blue; if it is not, highlight the (Click on the bar, the bar turns blue) then to the menu File>Print 3. To minimize this bar chart: Minimize Button a. Click on the minimize button (the button on the left in the upper right hand corner of this window) E. Save your project: Click on the save file icon (the second icon on the left at the top of the screen)

3 Minitab Lab #1 Math 120 Nguyen 3 of 7 F. Steps to draw a Pie Chart of the variable, Eye Color 1. Click on: Graph Pie Chart In the Pie Chart window: a. To the left of Chart raw data, click on the circle option button. A dot should appear in this circle. b. Click in the Categorical variables text box to make the variable list on the left appear. c. Double click on C3 EYE COLOR in the box on the left to pump this variable to the Categorical variables box on the right. 2. Click on the Labels button 3. In the Pie Chart - Labels window: a. Click on the Slice Labels tab b. To the left of every line click on the check box option. A check should appear in every box. When you return to the Pie Chart window 4. Click on the OK button You should see the pie chart displayed on the right. 5. To insert your name on the and print it: a. Right-click on the title, select Add select Title type in your name following the title b. Print the Graph: The bar should be blue; if it is not, highlight the (Click on the bar, the bar turns blue) then to the menu File>Print 6. To minimize this bar chart: a. Click on the minimize button in this window. G. Save your project: Click on the save file icon

4 Minitab Lab #1 Math 120 Nguyen 4 of 7 H. Steps to calculate the basic statistics on the variable, SAT MAT (SAT Math Scores) 1. Click on: Stat Basic Statistics Display Descriptive Statistics In the Display Descriptive Statistics window: a. Double click on C5 SAT MAT in the box on the left to pump this variable to the Variables box on the right. 2. In the Session window, you should see the descriptive statistics displayed to the right: I. Save your project: Click on the save file icon J. Steps to calculate the column statistic, Range for the variable, SAT MAT 1. Click on: Calc Column Statistics In the Column Statistics window: a. To the left of RANGE, click on the circle option button. A dot should appear in this circle. b. Click in the Input variable: text box to make the variable list on the left appear. c. Double click on C5 SAT MAT in the box on the left to pump this variable to the Variables box on the right d. Click on the OK button 2. In the Session window, you should see on the bottom line the messages displayed to the right:

5 Minitab Lab #1 Math 120 Nguyen 5 of 7 K. Save your project : Click on the save file icon L. Steps to draw a histogram of the variable, SAT MAT 1. Click on: Graph Histograms In the Histograms window: a. Click on the Simple button In the Histogram Simple window a. Double click on C5 SAT MAT in the box on the left to pump this variable to the Variables box on the right. You should see the histogram displayed to the right. 5. To insert your name on the and print it: a. Right-click on the title, select Add select Title type in your name following the title b. Print the Graph: The bar should be blue; if it is not, highlight the (Click on the bar, the bar turns blue) then to the menu File>Print 6. To minimize this histogram: a. Click on the minimize button in this window. M. Save your project : Click on the save file icon N. Steps to draw a boxplot for the variable, SAT MAT 1. Click on: Graph Boxplots In the Boxplots window: a. Click on the Simple button

6 Minitab Lab #1 Math 120 Nguyen 6 of 7 In the Boxplot One Y, Simple window: 1. Double click on C5 SAT MAT in the box on the left to pump this variable to the Graph Variables box on the right. 2. Click on the Scale button 3. In the Boxplot - Scale window: a. Click on the Axes and Ticks tab b. To the left of Transpose value and category scales (the last line) click on the check box option. A check should appear in this box. When you return to the Boxplot One Y, Simple window 4. Click on the OK button You should see the boxplot displayed on the right. 5. To insert your name on the and print it: a. Right-click on the title, select Add select Title type in your name following the title b. Print the Graph: The bar should be blue; if it is not, highlight the (Click on the bar, the bar turns blue) then to the menu File>Print 6. To minimize this bar chart: a. Click on the minimize button in this window. O. Save your project : Click on the save file icon

7 Minitab Lab #1 Math 120 Nguyen 7 of 7 P. Steps to create a stem-and-leaf diagram of the variable, SAT MAT. 1. Click on: Graph Stem-and-Leaf In the Stem-and-Leaf window: a. Double click on C5 SAT MAT in the box on the left to pump this variable to the Graph Variables box on the right. b. Click in the Increment: text box Note: The items in the box on the left will disappear and type: 50 In the Sessions window, you should see part of the stemplot displayed on the right. 3. To maximize this window to see the entire diagram: a. Click on the maximize button (the button in the middle in the upper right hand corner of this window) Maximize Button b. Click on the up arrow on the scroll bar on the right edge until you see the entire diagram. Up Arrow Q. Save your project: Click on the save file icon R. Print the Session window. The session window bar should be blue; if it is not, highlight the session window (Click on the session window bar, the bar turns blue), then go to the menu File>Print Session window. S. Type a TITLE PAGE (using MS Word) for the lab, with Lab #, Date, Your Name, and Analysis. Out of the 3 s (the pie chart, the histogram, and the stem-and-leaf diagram) choose 2 s and analyze their results -- whether you are surprised by the frequencies in the distributions or not, whether the numbers from this sample of 50 students fairly represent the student population, etc. Your analysis should include at least one para. T. Steps to end your computer session: Click on: Start Log off