UGC NET Correlation and regression Previous Year Questions
JRFSmart holds 35 previous-year questions on Correlation and regression from UGC NET Commerce (Paper 2), filed under Unit 5: Business Statistics and Research Methods, drawn from 18 of the 22 exam papers in the bank (2018–2025). Each question can be practised with a full explanation and shows how often NTA has returned to the same idea.
What is asked in Correlation and regression
The questions in this topic fall under these subtopics, ordered by how many previous-year questions each has.
| Subtopic | Questions |
|---|---|
| Correlation from regression coefficients | 3 |
| Interpreting the correlation coefficient | 2 |
| Properties of the regression coefficient | 1 |
| Means from two regression lines | 1 |
| Coefficient of determination - goodness of fit | 1 |
| Sums of squares in regression | 1 |
| Measures of association | 1 |
| Assumptions of linear regression | 1 |
| Coefficient of determination | 1 |
| Probable error and Type-I error | 1 |
| Multicollinearity | 1 |
| Properties of regression coefficients | 1 |
NTA repeat analysis
Correlation and regression appears in 18 of 22 papers (82%), which JRFSmart rates as high frequency.
5 questions in this topic have been verified as repeated in more than one paper.
Sample previous-year questions
Which one of the following is not an assumption of simple linear regression model?
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: R² tends to be smaller for cross-sectional data than for the time series data. Reason R: Wider fluctuations in the cross-sectional data cause…
Given below are two statements: Statement I: The probable error (P.E.) of the coefficient of correlation (r) is defined as: PE = (1−r²)/√n Statement II: When a null hypothesis is true but the test statistic rejects it, this is known as Type-1 error in…
Multicollinearity in the regression analysis is measured by:
If two regression coefficients are −0.8 and −0.2, then the value of the coefficient of correlation is:
Which of the following are properties of regression coefficients? A. The coefficient of correlation and the two regression coefficients have the same signs. B. The coefficient of correlation is the harmonic mean between the regression coefficients. C. If one…
Match List - I with List - II. LIST I | LIST II A. Probable Error of Correlation Coefficient | I. Explained Variation / Total Variation B. Standard Error of Correlation Coefficient | II. Unexplained Variation / Total Variation C. Coefficient of Determination…
If two regression lines are: 8x−10y+66=0 and 40x−18y=214, then x̄ & ȳ are respectively:
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