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Industrial Statistics with Minitab by Xavier Tort-Martorell Llabres, Lluis Marco Almagro, Pere Grima Cintas

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4.3 Identifying Points on a Graph

Consider a new file, CARS.MTW, to demonstrate Minitab possibilities to identify points on graphs.

This file contains 14 columns corresponding to different characteristics of 236 cars; the data is taken from the website of the Spanish Royal Automobile Club (Real Automóvil Club de España) in January 2011. This file is organized as follows:
Column Variable
C1 Maker
C2 Model
C3 Price (in Euros)
C4 Number of cylinders
C5 Displacement (cc)
C6 Power (CV)
C7 Length (cm)
C8 Width (cm)
C9 Height (cm)
C10 Luggage capacity (litres)
C11 Weight (kg)
C12 Consumption (litrs/100 km)
C13 Maximum speed (km/h)
C14 Acceleration (seconds going from 0 to 100 km/h)

Plotting price(Y) with respect to power(X):

nc04uf005.eps

A simple way to identify cars with high prices in relation to their power consists on placing the cursor over the dots corresponding to observed high prices. Indeed, if you do so, after a while a small information box appears containing the row number corresponding to the data point together with its respective Y and X values.

Alternatively, you can identify points on a graph using: Editor > Brush. This will open up a small box containing the row-numbers corresponding to the marked data points. It is possible to mark a single ...

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