In: Statistics and Probability
Why is regression analysis necessary in business? What two categories of regression models are used? Explain
REgression analysis is all about data. It helps business understands the data points they have and use them specifically relationship between the data points - to make better decisions, including anything from predicting sales to understanding inventory levels and supply and demand.
The two categories of regression models that are frequently being used in business analytics are given as follows:
1) Simple Regresssion Analysis- Used to estimate the relationship between a dependent variable and a single independent variable , for example- the relationship between crop yields and rainfall.
2) Multiple Regression Analysis- Used to estimate the relationship between a dependent variable and two or more independent variables, for example- the relationship between salaries of employees and their experience and education.
Multiple regression analysis introduces several additional complexities but may produce more realistic results than simple regresssion analysis.