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@hugov/metanorm
@hugov/metanorm/index.js

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Readme

metanorm

random number generator for specified confidence interval, median and bounds note that this uses a gaussian Z as seed and not the usual uniform U to facilitate the generation of correlated variables

• Example • API • License

Example

import meta from 'metanorm'

const n = meta(1, 4, {ci:0.5})(),    // normal distribution with 50% of values between 1 and 4
      l = meta(1, 4, {min:0}, 0.9)(),    // lognormal distribution with 90% of values between 1 and 4 (lower bound at 0)
      x = meta(1, 4, {med:2}, 0.9)(),    // an unbounded skewed infinite distribution with a median at 2

API

Arguments	Returns	Notes
`low, top [,{min, med, max, ci}]`	`rndNumberGenerator`	Only `low` and `top` are required

Arguments	Notes
`[min]`	Optional, a lower bound
`low`	The low end of the stated confidence interval
`[med]`	Optional median value
`top`	The top end of the stated confidence interval
`[max]	Optional, an upper bound
`[ci=0.8]	Optional, The confidence interval, defaults to 80%

Returned Function	Arguments	Returns	Notes
`rndNumberGenerator`	`[zSeed]`	`Number`	Random number

Where zSeed is an optional unit normal distribution number