p4.18: Data Set for Problem 4-18

Description Usage Format Source References Examples

Description

The p4.18 data frame has 13 observations on an experiment to produce a synthetic analogue to jojoba oil.

Usage

1

Format

This data frame contains the following columns:

x1

reaction temperature

x2

initial amount of catalyst

x3

pressure

y

yield

Source

Montgomery, D.C., Peck, E.A., and Vining, C.G. (2001) Introduction to Linear Regression Analysis. 3rd Edition, John Wiley and Sons.

References

Coteron, Sanchez, Matinez, and Aracil (1993) Optimization of the Synthesis of an Analogue of Jojoba Oil Using a Fully Central Composite Design. Canadian Journal of Chemical Engineering.

Examples

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data(p4.18)
y.lm <- lm(y ~ x1 + x2 + x3, data=p4.18)
summary(y.lm)
y.lm <- lm(y ~ x1, data=p4.18)

Example output

Attaching package: 'MPV'

The following object is masked from 'package:datasets':

    stackloss


Call:
lm(formula = y ~ x1 + x2 + x3, data = p4.18)

Residuals:
   Min     1Q Median     3Q    Max 
-9.089 -4.075 -2.075  2.558 18.293 

Coefficients:
            Estimate Std. Error t value Pr(>|t|)    
(Intercept)   32.075      2.493  12.864 4.25e-07 ***
x1            15.236      3.398   4.484  0.00152 ** 
x2            -4.059      3.222  -1.260  0.23941    
x3            -4.809      3.222  -1.493  0.16973    
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 8.79 on 9 degrees of freedom
Multiple R-squared:  0.692,	Adjusted R-squared:  0.5893 
F-statistic: 6.739 on 3 and 9 DF,  p-value: 0.01118

MPV documentation built on June 8, 2018, 1:03 a.m.