Useful tips for everyday
What is the estimated number of veterans in the United States? around 19 million There are around 19 million U.S. veterans as of this year,…
Can PCA be used for variable selection? While it is technically possible to use PCA on discrete variables, or categorical variables that have been one…
What is the variance explained by the model? What is Explained Variance? Explained variance (also called explained variation) is used to measure the discrepancy between…
Why is time to event variables called survival analysis? Statistical analysis of time to event variables requires different techniques than those described thus far for…
What is the Tobit model used for? The tobit model, also called a censored regression model, is designed to estimate linear relationships between variables when…
What does the Dickey-Fuller test tell you? In statistics, the Dickey–Fuller test tests the null hypothesis that a unit root is present in an autoregressive…
How do you calculate p-value and correlation coefficient in Excel? To determine if a correlation coefficient is statistically significant, you can calculate the corresponding t-score…
What is conditional independence in research? In probability theory, conditional independence describes situations wherein an observation is irrelevant or redundant when evaluating the certainty of…
How can I make my blog more visible? 10 tips for improving visibility for a new blog Optimize your blog for SEO. Direct internal links…
Are residuals normally distributed in logistic regression? An important assumption of logistic regression is that the errors (residuals) of the model are approximately normally distributed.…