# Performing Simple Probabilistic Simulations in MINITABTM

## Chapter 5, Printout 1

1. Launch MINITAB.

2. Enter the variables and simulate random data.

• Name Column C1 by clicking the blank column label and typing "C"

• Name Columns C2-C8 "G," "A," "Mi," "Mo," "Ta," "Ti," and "To," respectively.

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• Select "Calc --> Random Data --> Normal."

• Fill out the resulting dialog box as follows:

Input Type Label Value
Generate 100
Store in column(s): C
Mean: 1003.8
Standard deviation: 0.502

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• Click "OK."

MINITAB fills Column C1 with 100 randomly generated specific heat values.

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• Generate random data for the remaining seven columns by the same process as for Column C1, in each case using the "Measured Value" from Table 5.23 (p. 305) as the mean and 0.5 * Uncertainty as the standard deviation.

The following table summarizes the entries to be made:

Generate Store in column(s): Mean: Standard deviation:
C2 100 G 1121.4 16.8
C3 100 A 1.58 0.0025
C4 100 Mi 0.0234 0.000175
C5 100 Mo 0.0247 0.000185
C6 100 Ta -13.22 0.25
C7 100 Ti -6.08 0.25
C8 100 To 24.72 0.25

MINITAB fills Columns C2-C8 with randomly generated values for the variables according to their means and standard deviations.

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3. Simulate Efficiency.

• Name Column C9 "Eff."

• Select "Calc --> Calculator."

• Fill out the resulting dialog box as follows:

Input Type Label Value
Store result in variable: 'Eff'
Expression: ('C' / ('G' * 'A')) * ('Mo' * 'To' - 'Mi' * 'Ti' - ('Mo' - 'Mi') * 'Ta')

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• Click "OK."

MINITAB simulates efficiency values and stores them in Column C9.

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4. Display descriptive statistics for Eff.

• Select "Stat --> Basic Statistics --> Display Descriptive Statistics."

• Fill out the resulting dialog box as follows:

Input Type Label Value
Variables: Eff
By variable: unchecked

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MINITAB displays descriptive statistics for Eff.

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5. Generate a stem-and-leaf plot for Eff.

• Select "Graph --> Stem-and-Leaf."

• Fill out the resulting dialog box as follows:

Input Type Label Value
Variables: Eff
By variable: unchecked
Trim outliers: unchecked
Increment: 0.005

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• Click "OK."

MINITAB displays a stem-and-leaf plot.

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