import { ExamFact, ExamDim, QuestionStat } from ".";
export declare class ExamStat {
    id: number;
    examDimId: number;
    questions: number;
    mean: number;
    minScore: number;
    maxScore: number;
    scoreRange: number;
    standardDev: number;
    aav: number;
    kr20: number;
    sumOfPq: number;
    krv: number;
    students: ExamFact[];
    private calculateSumOfPq(questions);
    private calculateKr20();
    populate(exam: ExamDim, students: ExamFact[]): void;
    complete(questionStats: QuestionStat[]): void;
}