Resistance of One-half-ohm Resistors
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.
data(resistors)
The resistors data frame has 28 rows and 2 columns.
| [, 1] | midpoints | midpoints of intervals (ohm) |
| [, 2] | counts | number of observations in interval |
Hahn, Gerald J. and Shapiro, Samuel S. (1967) Statistical Models in Engineering. New York: Wiley, page 207.
Chen, Hanfeng, and Kamburowska, Grazyna (2001) Fitting data to the Johnson system. J. Statist. Comput. Simul. 70, 21–32.
data(resistors) str(resistors) ### Construct data from frequency summary, taking all observations ### at midpoints of intervals resistances <- rep(resistors$midpoints, resistors$counts) hist(resistances) DistributionUtils::logHist(resistances) ## Fit the hyperbolic distribution hyperbFit(resistances) ## Actually fit.hyperb can deal with frequency data hyperbFit(resistors$midpoints, freq = resistors$counts)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.