Which are the must assumptions that need to be considered while conducting linear regression test?
Gopalakrishna, the most important assumptions are 1) dependent variable should be measured at the continuous level and 2) independent variable should be measured at either continuous or categorical level.
Gopalakrishna, there are many assumptions that should be met while conducting linear regression test. Two of them are already mentioned by nithin. The rest are
There must be no significant outliers
Independence of observations must be present
Data should exhibit homoscedasticity
Linear relationship between dependent variable & independent variables.
Gopalakrishna visit https://statistics.laerd.com/stata-tutorials/linear-regression-using-stata.php for more information.