1 Byers and Williams (Viscosities of Binary and Ternary Mixtures of Polyaromatic Hydrocarbons," Journal of Chemical and Engineering Data, 32, 349 – 354, 1987) studied the impact of temperature (the regressor) on the viscosity (the response) of toluene- tetralin blends. The following table gives the data for blends with a 0.4 molar fraction of toluene. Temperature (°C) Viscosity (mPa·s) 1.133 24.9 35.0 0.9772 44.9 0.8532 55.1 0.7550 65.2 0.6723 75.2 0.6021 85.2 0.5420 95.2 0.5074 Plot a scatter diagram. Does it seem likely that a straight-line model will be adequate?

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5.1 Byers and Williams (Viscosities of Binary and Ternary Mixtures of Polyaromatic
Hydrocarbons," Journal of Chemical and Engineering Data, 32, 349 – 354, 1987)
studied the impact of temperature (the regressor) on the viscosity (the response) of
toluene - tetralin blends. The following table gives the data for blends with a 0.4 molar
fraction of toluene.
+
Temperature (°C)
Viscosity (mPa·s)
1.133
24.9
35.0
0.9772
44.9
0.8532
55.1
0.7550
65.2
0.6723
75.2
0.6021
85.2
0.5420
95.2
0.5074
a. Plot a scatter diagram. Does it seem likely that a straight line model will be adequate?
Transcribed Image Text:5.1 Byers and Williams (Viscosities of Binary and Ternary Mixtures of Polyaromatic Hydrocarbons," Journal of Chemical and Engineering Data, 32, 349 – 354, 1987) studied the impact of temperature (the regressor) on the viscosity (the response) of toluene - tetralin blends. The following table gives the data for blends with a 0.4 molar fraction of toluene. + Temperature (°C) Viscosity (mPa·s) 1.133 24.9 35.0 0.9772 44.9 0.8532 55.1 0.7550 65.2 0.6723 75.2 0.6021 85.2 0.5420 95.2 0.5074 a. Plot a scatter diagram. Does it seem likely that a straight line model will be adequate?
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