Mathematics · Regression & Extrapolation
The regression equation Y = 3 + 2X is calculated from 6 pairs of values, with X ranging from 1 to 10. The correlation coefficient is 0.8. It is estimated that Y = 43 when X = 20. Which statement best evaluates this forecast?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 1The estimate is not reliable solely because the sample size is small.
- 2The estimate is reliable because the correlation coefficient is positive and high.
- 3The estimate is not reliable because the correlation coefficient is too low.
- 4The estimate is not reliable because X is outside the range of the sample data.✓
Correct answer
The estimate is not reliable because X is outside the range of the sample data.
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Start Free Mock Test →Preparing for Mathematics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice Regression & Extrapolation MCQs →Want more practice questions on Regression & Extrapolation?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Mathematics · Regression & Extrapolation