freqdigits: Count frequencies of a significant digits vector

In mlespera/BenGood: Assessing Goodness-of-Fit of Data to Benford's Law

Description

freqdigits computes the frequencies of numbers with numdigits first significant digits in a vector x of first digits.

Usage

freqdigits(x, numdigits = 1)

Arguments

x	A significant digits vector.
numdigits	A positive integer, default is 1.

Details

freqdigits may return different vectors for a single x depending upon the numdigits chosen. For example, freqdigits(1:9, 1) will return a vector of ones of length 9, but freqdigits(1:9, 2) will return a vector of zeroes of length 90 because the values in 1:9 all have only 1 digit.

If the vector x contains first digits of varying lengths, then freqdigits will only count the first digits containing numdigits digits. For example, inputting x={1,10,100} with numdigits=1 will return a vector of length 9 with a 1 in the first position and zeroes otherwise.

Value

The output will always be a vector of length 9*(10^(numdigits-1)).

References

Lesperance M, Reed WJ, Stephens MA, Tsao C, Wilton B (2016) Assessing conformance with Benford's Law: goodness-of-fit tests and simultaneous confidence intervals. PLoS one; 11(3).

See Also

extractdigits

firstdigitsfreq

Examples

freqdigits(1:9, 1)
freqdigits(c(456,290,180), 3)
freqdigits(extractdigits(c(0.41, 1.25, 0.21, 0.54, 0.19),1),1)

mlespera/BenGood documentation built on May 18, 2019, 3:43 p.m.