Useful tips for everyday
Can you combine categorical variables in SPSS? SPSS Combine Categorical Variables – Other Data So instead of rewriting it, just copy and paste it and…
Is the standard deviation linear? From Equation 3.6, we conclude that, for standard deviation, SD(aX+b)=|a|SD(X). We mentioned that variance is NOT a linear operation. But…
Why do we use bag of words for text classification? Bag-of-Words for Text Classification: Why not just use word frequencies instead of TFIDF? A common…
Can you use Chi-square for continuous data? The Chi-Square Test of Independence can only compare categorical variables. It cannot make comparisons between continuous variables or…
What is the formula for finding a sample size? Use the numbers already found to determine the answer with the following formula: Sample size is…
What does the R squared value mean in multiple regression? R-squared (R2) is a statistical measure that represents the proportion of the variance for a…
How are concentration indices used to measure inequality? Concentration indices can also be used to indicate health inequality. They use a similar methodology to Gini…
What does it mean if BIC is negative? Generally, the aim is to minimize BIC, so if you are in a negative territory, a negative…
How do I get VIF in JMP? You just right-click anywhere in the Parameter Estimates table and select Columns > VIF. VIFs are completely independent…
What can you tell from a normal distribution? A normal distribution is one in which the values are evenly distributed both above and below the…