p2.12: Data Set for Problem 2-12

Description Usage Format Source Examples

Description

The p2.12 data frame has 12 observations on the number of pounds of steam used per month at a plant and the average monthly ambient temperature.

Usage

1

Format

This data frame contains the following columns:

temp

ambient temperature (in degrees F)

usage

usage (in thousands of pounds)

Source

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

Examples

1
2
3
4
5
6
data(p2.12)
attach(p2.12)
usage.lm <- lm(usage ~ temp)
summary(usage.lm)
predict(usage.lm, newdata=data.frame(temp=58), interval="prediction")
detach(p2.12)

Example output

Attaching package: 'MPV'

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

    stackloss


Call:
lm(formula = usage ~ temp)

Residuals:
    Min      1Q  Median      3Q     Max 
-2.5629 -1.2581 -0.2550  0.8681  4.0581 

Coefficients:
            Estimate Std. Error t value Pr(>|t|)    
(Intercept) -6.33209    1.67005  -3.792  0.00353 ** 
temp         9.20847    0.03382 272.255  < 2e-16 ***
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 1.946 on 10 degrees of freedom
Multiple R-squared:  0.9999,	Adjusted R-squared:  0.9999 
F-statistic: 7.412e+04 on 1 and 10 DF,  p-value: < 2.2e-16

      fit      lwr      upr
1 527.759 523.1644 532.3537

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