Question: 1. Please explain the validity and reliability tests and include the test steps for testing. 2. Before performing multiple regression analysis, there are several assumptions

1. Please explain the validity and reliability tests and include the test steps for testing.

2. Before performing multiple regression analysis, there are several assumptions that the data must meet, including normality, heteroscedasticity, multicollinearity and autocorrelation. Give an explanation of these assumptions.

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