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Chapter 2 Minitab for Data Analysis

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Chapter 2Minitab for Data Analysis

Kanchalasudtachat

Example 2-1: tensile

7226, 7301, 7219, 7350, 7170, 7377, 7150, 7398

Basic command

- Open the worksheet sample.MTW
- Sort the data
- Data-> Sort
- Double click on C1 tensile on the left side.
- Click in the By Column box, then double click again on C1 tensile on the left pane. Don’t check Descending, if you want increasing.
- Click on the circle Column(s) of current worksheet, fill in C2

Basic command

- Random data
- Calc-> Random data->Normal
- Number of rows of data to generate 100. Store in column(s): C3
- Mean: 7274, Standard deviation: 95.6

- Sample mean and sample variance
- 1. Stat -> Basic Statistics -> Display Descriptive Statistics
- In the Display Descriptive Statistics dialog box
- Double click C3 S tensile to Variables
- Click Statistics dialog box

- Graphs-> Check Individual value plot

- Open worksheet Newcomb.MTJ
- Graph -> Dotplot -> Simple -> OK
- Double click C1 Newcomb

- Open worksheet Table2-2.MTJ
- Graph -> Stem-and-Leaf
- Double click C1 Strength

- Open worksheet Table2-4.MPJ
- Graph -> Histogram -> Simple
- In Graph variables,
Double click C1 Distance

- Graph -> Histogram
- -> With fit

- Fix number of intervals
- After obtained result of histogram
- Double click X Scale ->
Display Edit Scale

- Choose Binning
-> Number of intervals -> 10

- Stat -> Quality Tools -> Pareto Chart
- Double click C1 Type -> Defects or attribute data in:
- Double click C2 HullLosses-> Frequencies in:
- Check: Do not combine

Questions?