Useful tips for everyday
For which of the following reasons can factor analysis be used? This process is used to identify latent variables or constructs. The purpose of factor…
What are the various patterns of scatter diagram? Scatter Diagram Correlation Patterns Correlation Pattern X / Y Values Strong Positive Correlation The value of Y…
How do you use GA feature selection? GA process and its operators Selection: Pick up the most fitted individuals in a generation (i.e.: the solutions…
Do you include average in standard deviation? Understanding Standard Deviation To calculate the standard deviation: Find the mean, or average, of the data points by…
When to remove a variable from a regression model? In a more general situation, when you have two independent variables that are very highly correlated,…
Why do Neural Networks need non-linearity? Non-linearity is needed in activation functions because its aim in a neural network is to produce a nonlinear decision…
What are the degrees of freedom for the sums of squares total in a linear model? The degrees of freedom for the sum of squares…
What is a prospective case-control? In a prospective case-control study, the investigator still enrolls based on outcome status, but the investigator must wait to the…
What are the pros and cons of PCA? What are the Pros and cons of the PCA? Removes Correlated Features: Improves Algorithm Performance: Reduces Overfitting:…
What does the spectral theorem say? The spectral theorem shows that there is no loss of generality in assuming that A is the multiplication induced…