E2.6 {SenSrivastava}

Voltage Data

Description

The E2.6 data frame has 10 rows and 2 columns.

Usage

data(E2.6)

Format

This data frame contains the following columns:

V.a

a numeric vector, actual voltage.

V.c

a numeric vector, voltage computed from the measured power outout (using light output from electronic flash).

Details

A definition of efficiency is the ratio V.c/V.a. Obtain a model for efficiency E as a regresion in V.a. Use a quadratic polynomial. Examine the fit.

Source

Armin Lehning, Speedotron Corporation.

Examples

data(E2.6)
E2.6.m1 <- lm(V.c/V.a ~ V.a + I(V.a^2), data=E2.6)
plot(E2.6.m1)