Useful tips for everyday
Can you do Chi square with more than two categories? Chi-square can also be used with more than two categories. For instance, we might examine…
What is a non stationary time series? Non-stationary data, as a rule, are unpredictable and cannot be modeled or forecasted. The results obtained by using…
When does spatial autocorrelation occur in a data set? In spatial data, it is often the case that some or all outcome measures exhibit spatial…
What to do if regression residuals are not normally distributed? 2) Transform the data so that it meets the assumption of normality. 3) Look at…
When you calculate a correlation How many independent variables do you have? two independent variables Correlation coefficient ( denoted = r ) describe the relationship…
What does a negative binomial regression tell you? Negative binomial regression is a generalization of Poisson regression which loosens the restrictive assumption that the variance…
How do you interpret a cox box transformation? For the Box-Cox transformation, a λ value of 1 is equivalent to using the original data. Therefore,…
How to reduce noise in an imbalanced dataset? A larger dataset will reduce the data to be imbalanced and might turn out to have a…
How do you calculate Precision and Recall in Python? The precision is intuitively the ability of the classifier not to label as positive a sample…
When does the determinant of a correlation matrix become zero? The determinant of a correlation matrix becomes zero or near zero when some of the…