by saspower | Jun 15, 2024 | Data Science Online Course
When the data is not linear, linear regression works poorly because it presupposes a linear connection between the dependent and independent variables. This leads to biassed and erroneous forecasts. The model’s residuals (errors) are likely to be big and not...
by saspower | Jun 13, 2024 | Data Science Online Course
Correlation evaluates the degree and direction of a linear relationship between two variables, with values ranging from -1 (perfect negative) to +1 (perfect positive). It is assessed using a correlation coefficient. Regression, especially linear regression, is the...
by saspower | Jun 12, 2024 | SAS Online Course in India
A high R-squared score in linear regression shows that the model and data are well-fitted. An R-squared value greater than 0.7 is regarded good, indicating that the model explains 70% or more of the variability in the response variable. A low R-squared value, usually...
by saspower | Jun 6, 2024 | Data Science Online Course
Income Distribution: Income data is frequently right skewed, with a small number of people earning extremely high earnings and the bulk receiving moderate to low incomes.House Prices: Real estate prices are right-skewed, with the majority of residences being fairly...
by saspower | May 28, 2024 | Data Science Online Course
Data sets with a high mean and a low standard deviation show that the majority of values are tightly grouped around a high central value. Here are few examples:Test Scores in a Well-Prepared Class: If the majority of students score well, scoring between 90 and 95...
