repl.txt (1834B)
1 2 {{alias}}( [d1, d2] ) 3 Returns an F distribution object. 4 5 Parameters 6 ---------- 7 d1: number (optional) 8 Numerator degrees of freedom. Must be greater than `0`. Default: `1.0`. 9 10 d2: number (optional) 11 Denominator degrees of freedom. Must be greater than `0`. 12 Default: `1.0`. 13 14 Returns 15 ------- 16 f: Object 17 Distribution instance. 18 19 f.d1: number 20 Numerator degrees of freedom. If set, the value must be greater than 21 `0`. 22 23 f.d2: number 24 Denominator degrees of freedom. If set, the value must be greater than 25 `0`. 26 27 f.entropy: number 28 Read-only property which returns the differential entropy. 29 30 f.kurtosis: number 31 Read-only property which returns the excess kurtosis. 32 33 f.mean: number 34 Read-only property which returns the expected value. 35 36 f.mode: number 37 Read-only property which returns the mode. 38 39 f.skewness: number 40 Read-only property which returns the skewness. 41 42 f.stdev: number 43 Read-only property which returns the standard deviation. 44 45 f.variance: number 46 Read-only property which returns the variance. 47 48 f.cdf: Function 49 Evaluates the cumulative distribution function (CDF). 50 51 f.pdf: Function 52 Evaluates the probability density function (PDF). 53 54 f.quantile: Function 55 Evaluates the quantile function at probability `p`. 56 57 Examples 58 -------- 59 > var f = {{alias}}( 6.0, 9.0 ); 60 > f.d1 61 6.0 62 > f.d2 63 9.0 64 > f.entropy 65 ~1.134 66 > f.kurtosis 67 ~104.564 68 > f.mean 69 ~1.286 70 > f.mode 71 ~0.545 72 > f.skewness 73 ~4.535 74 > f.stdev 75 ~1.197 76 > f.variance 77 ~1.433 78 > f.cdf( 3.0 ) 79 ~0.932 80 > f.pdf( 2.5 ) 81 ~0.095 82 > f.quantile( 0.8 ) 83 ~1.826 84 85 See Also 86 -------- 87