Function varianceAnalysis

Returns
    | {
        alternative: Alternative;
        ci: CI;
        confidence: number;
        df: number;
        estimate: number;
        groups: { ci: CI; n: number; name: string; sd: number; variance: number }[];
        method: string;
        pValue: number;
        ratio?: undefined;
        ratio0?: undefined;
        sd: number;
        sdCI: CI;
        sdRatio?: undefined;
        sigma0: number;
        source: { n: number; name: string; nMissing: number; sd: number }[];
        statistic: number;
        test: string;
    }
    | {
        alternative: Alternative;
        ci: CI;
        confidence: number;
        df: number[];
        estimate: number;
        groups: { ci: CI; n: number; name: string; sd: number; variance: number }[];
        method: string;
        pValue: number;
        ratio: number;
        ratio0: number;
        sd?: undefined;
        sdCI: CI;
        sdRatio: number;
        sigma0?: undefined;
        source: { n: number; name: string; nMissing: number; sd: number }[];
        statistic: number;
        test: string;
    }
    | {
        alternative: Alternative;
        ci: [number, number];
        confidence: number;
        df?: number;
        estimate: number;
        groups: {
            ci: CI;
            n: number;
            name: string;
            nMissing: number;
            sd: number;
            variance: number;
        }[];
        kurtosis?: number;
        method: "bonett";
        n: number;
        pValue: number;
        sd: number;
        sdCI: CI;
        source: { n: number; name: string; nMissing: number; sd: number }[];
        statistic?: number;
        test: string;
    }
    | {
        alternative: "two-sided";
        ci?: [number, number];
        confidence: number;
        df: number | [number, number];
        groups: { n: number; name: string; sd: number; variance: number }[];
        method: "levene" | "bartlett" | "chi-square" | "f" | "brown-forsythe";
        n: number;
        pValue: number;
        ratio?: number;
        source: { n: number; name: string; nMissing: number; sd: number }[];
        statistic: number;
        test:
            | "Levene"
            | "Brown-Forsythe"
            | "Bartlett"
            | "Bonett"
            | "F-test (2 variances)";
    }