resistors {HyperbolicDist} | R Documentation |
Resistance of One-half-ohm Resistors
Description
This data set gives the resistance in ohms of 500 nominally one-half-ohm resistors, presented in Hahn and Shapiro (1967). Summary data giving the frequency of observations in 28 intervals.
Usage
data(resistors)
Format
The resistors
data frame has 28 rows and 2 columns.
[, 1] | midpoints | midpoints of intervals (ohm) |
[, 2] | counts | number of observations in interval |
Source
Hahn, Gerald J. and Shapiro, Samuel S. (1967) Statistical Models in Engineering. New York: Wiley, page 207.
References
Chen, Hanfeng, and Kamburowska, Grazyna (2001) Fitting data to the Johnson system. J. Statist. Comput. Simul., 70, 21–32.
Examples
data(resistors)
str(resistors)
attach(resistors)
### Construct data from frequency summary, taking all observations
### at midpoints of intervals
resistances <- rep(midpoints,counts)
hist(resistances)
logHist(resistances)
## Fit the hyperbolic distribution
hyperbFit(resistances)
## Actually fit.hyperb can deal with frequency data
hyperbFit(midpoints, freq=counts)
[Package HyperbolicDist version 0.6-5 Index]