export interface StatsJSON {
    n: number;
    min: number;
    max: number;
    sum: number;
    mean: number;
    variance: number;
    stddev: number;
}
export default class Stats {
    n: number;
    min: number;
    max: number;
    sum: number;
    mean: number;
    q: number;
    constructor();
    update(value: string | number): void;
    variance(): number;
    stddev(): number;
    toJSON(): StatsJSON | null;
}