# If a and b are two constants, then Var(a+bX) is_______________? with Answer - Statistics Mcqs | TestPrep

> Solved MCQ: If a and b are two constants, then Var(a+bX) is_______________? Correct Answer: D. b2Var(X). Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

---

Tested in Competitive Exams:

[NTS Test Prep](https://test-prep.blog/exams/nts)[FPSC Past Papers](https://test-prep.blog/exams/fpsc)[PPSC Solved MCQs](https://test-prep.blog/exams/ppsc)[PMDC MDCAT 2026](https://test-prep.blog/exams/mdcat)[UET ECAT Prep](https://test-prep.blog/exams/ecat)[CSS Central Superior](https://test-prep.blog/exams/css)

[Statistics Mcqs](https://test-prep.blog/categories/statistics-mcqs)
Difficulty: Challenging59% Accuracy

# If a and b are two constants, then Var(a+bX) is_______________?

Direct Answer & Quick Reference

The correct option is **D. b2Var(X)**.

A. a±bVar(X)

B. Var(a)±Var(X)

C. ±bVar(X)

D. b2Var(X)Correct Answer

E. (a±b)Var(X)

Verified Key: D. b2Var(X)
Solved by 1,899+ students

Verified against official examination board answer keys and standard curriculum textbooks.

[Previous QuestionProbability of something in interest rate of XXX?](https://test-prep.blog/mcq/probability-of-something-in-interest-rate-of-xxx-2d95eaff-5641-4338-8dab-954e5955427a)[Next QuestionA histogram is a graph of ____________?](https://test-prep.blog/mcq/a-histogram-is-a-graph-of-____________-c10065c5-90cb-4a89-8c97-2a94ac82c007)

[Practice More Statistics Mcqs MCQs](https://test-prep.blog/quiz/smart?category=statistics-mcqs)[How We Verify Questions →](https://test-prep.blog/editorial-policy)

## Subject Overview

Explore thousands of solved past paper MCQs for Statistics Mcqs categorized with explanations.

[Browse All Statistics Mcqs MCQs →](https://test-prep.blog/categories/statistics-mcqs)

## Related Questions

[Probability of something in interest rate of XXX?](https://test-prep.blog/mcq/probability-of-something-in-interest-rate-of-xxx-2d95eaff-5641-4338-8dab-954e5955427a)[A histogram is a graph of ____________?](https://test-prep.blog/mcq/a-histogram-is-a-graph-of-____________-c10065c5-90cb-4a89-8c97-2a94ac82c007)[What is the mean of the data set {2, 4, 6, 8, 10}?](https://test-prep.blog/mcq/what-is-the-mean-of-the-data-set-2-4-6-8-10-714809ca-0125-4b4a-a297-c6bd49bd4492)[The listing of the data in order of numerical magnitude is called: ____________?](https://test-prep.blog/mcq/the-listing-of-the-data-in-order-of-numerical-magnitude-is-called-____________-09d8a47c-4d66-4de3-9017-3b1c6fc08276)[V=x^3 , then the shape is](https://test-prep.blog/mcq/vx3-then-the-shape-is-9eb6f22e-fa71-4080-97db-696582370474)

---
*Source: https://test-prep.blog/mcq/if-a-and-b-are-two-constants-then-varabx-is_______________-90c8b56a-3fdc-4b4c-85d2-fa5d2741a40b*
*Format: Markdown for Agents (Content Negotiation: text/markdown)*
