Useful tips for everyday
What happens to the t statistic when using a larger sample? Higher t-value means lower p-value infering that the difference between sample-mean ($\bar{X}$) and population-mean…
What is difference between Type 1 and Type 2 error? Type 1 error, in statistical hypothesis testing, is the error caused by rejecting a null…
Does the adjusted R2 value always increase as additional variables are added to the model? The adjusted R-squared is a modified version of R-squared that…
How are the bootstrap and the t-test similar? Both the t-test and the bootstrap are based on sampling distributions, what the distribution of the test…
Which chart is best for outliers and mean? Scatter Charts Scatter Charts Good for showing the relationship between two different variables where one correlates to…
Why do small populations of species evolve more rapidly than large populations? Small populations tend to lose genetic diversity more quickly than large populations due…
How Bayesian belief network is useful for classification? Bayesian belief networks allow class conditional independencies to be defined between subsets of variables. They provide a…
What does Mann-Whitney U compare? Introduction. The Mann-Whitney U test is used to compare differences between two independent groups when the dependent variable is either…
Does softmax use logistic regression? Softmax Regression (synonyms: Multinomial Logistic, Maximum Entropy Classifier, or just Multi-class Logistic Regression) is a generalization of logistic regression that…
How do you test for superiority? Superiority tests are one-sided hypothesis tests in which the null and alternative hypotheses are arranged to test whether one…