chem.df: Yield of Chemical Process

In R330: An R package for Stats 330

Description

The data was collected to see if how the yields from a particular chemical process were associated with higher or lower flows and conversion percentages

Usage

data(chem.df)

Format

A data frame with 44 observations on the following 4 variables:

yield

yield

conversion

conversion as a percentage

flow

flow

ratio

ratio

Examples

data(chem.df)
chem.lm<-lm(yield~.,data=chem.df)
summary(chem.lm)

Example output

Loading required package: s20x
Loading required package: leaps
Loading required package: rgl
Loading required package: lattice
Warning messages:
1: In rgl.init(initValue, onlyNULL) : RGL: unable to open X11 display
2: 'rgl.init' failed, running with 'rgl.useNULL = TRUE'. 

Call:
lm(formula = yield ~ ., data = chem.df)

Residuals:
    Min      1Q  Median      3Q     Max 
-8.1715 -1.3101  0.1171  1.5926  5.5769 

Coefficients:
              Estimate Std. Error t value Pr(>|t|)    
(Intercept) 113.011270  14.631935   7.724 1.88e-09 ***
conversion   -5.189435   1.149651  -4.514 5.49e-05 ***
flow         -0.006983   0.004467  -1.563    0.126    
ratio        -0.055762  15.755755  -0.004    0.997    
---
Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Residual standard error: 3.118 on 40 degrees of freedom
Multiple R-squared:   0.46,	Adjusted R-squared:  0.4195 
F-statistic: 11.36 on 3 and 40 DF,  p-value: 1.591e-05

R330 documentation built on May 2, 2019, 2:12 p.m.