import * as i0 from "@angular/core";
export declare class StandardDeviationService {
    standardDeviation(array: number[]): number | undefined;
    mean(array: number[]): number;
    incrementsFromMean(array: number[]): number[];
    static ɵfac: i0.ɵɵFactoryDeclaration<StandardDeviationService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<StandardDeviationService>;
}