Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Mathematics Statistics Correlation and Regression
Variable Y regresses with variable X with the conditions that \(\overline X = 5.50\), \(\overline Y = 3.50\) and b = 1.50 in the linear regression model (Y = a + bX), where \(\overline Y\) and \(\overline X\) are means of the respective variables and b refers to gradient of line of Y w. r. t X. Which one of the following values of parameter 'a' of the model is correct?
1
1.75
2
3.75
3
-4.75
4
-5.75