export declare const FIRST_QUARTILE = 0.25;
export declare const THIRD_QUARTILE = 0.75;
export type DataOrSortedData = {
    sortedData: number[];
    data?: number[];
} | {
    data: number[];
    sortedData?: number[];
};
export declare const sort: (data: number[]) => number[];
export declare const mean: (data: number[]) => number;
export declare const variance: ({ data, sortedData, mean: m, besselsCorrection, }: DataOrSortedData & {
    mean?: number | undefined;
    besselsCorrection?: boolean | undefined;
}) => number;
export declare const stdev: ({ data, sortedData, variance: v, }: (DataOrSortedData & {
    variance?: number;
}) | (Partial<DataOrSortedData> & {
    variance: number;
})) => number;
export declare const pooledVariance: ({ besselsCorrection, data1, n1, variance1, data2, n2, variance2, }: ({
    data1: number[];
    n1?: number | undefined;
    variance1?: number | undefined;
    data2: number[];
    n2?: number | undefined;
    variance2?: number | undefined;
} | {
    data1?: number[] | undefined;
    n1: number;
    variance1: number;
    data2?: number[] | undefined;
    n2: number;
    variance2: number;
}) & {
    besselsCorrection?: boolean | undefined;
}) => number;
export declare const harmonicMean: (...numbers: number[]) => number;
export declare const distances: (data: number[]) => number[];
export declare const consecutiveRatios: (data: number[]) => number[];
export declare const quantile: ({ data, sortedData, q, }: DataOrSortedData & {
    q: number;
}) => number;
export declare function interQuartileRange({ data, sortedData, }: DataOrSortedData): number;
export declare const DEFAULT_QUANTILE_PRECISION_DELTA = 0.01;
export declare const findSharpChangeQuantile: ({ data, sortedData, precisionDelta, lowestTestedQuantile, }: DataOrSortedData & {
    precisionDelta?: number | undefined;
    lowestTestedQuantile?: number | undefined;
}) => {
    q: number;
    qValue: number;
    qMinusDeltaValue: number | undefined;
};
export declare const getStableRandom: (seed?: number) => () => number;
export declare const histogramBy: <T, Comparable>(iterable: Iterable<T>, getValue: (i: T) => Comparable) => (readonly [T[], number])[];
export declare const mostCommonBy: <T, Comparable>(iterable: Iterable<T>, getValue: (i: T) => Comparable) => T[];
export declare const partition: <T, U extends T>(iterable: Iterable<T>, predicate: (val: T) => val is U) => [U[], T[]];
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