Statistical Other Tutorials

For a random variable, denoted as X, you can use the following formula to calculate the expected value of X2: E(X2) =…

In statistics, Sxx represents the sum of squared deviations from the mean value of x. This value is often calculated when fitting…

A hypothesis test is used to test whether or not some assumption about a population parameter is true. Whenever we perform a…

Residual plots are used to assess whether or not the residuals in a regression model are normally distributed and whether or not…

In statistics, you will encounter the formula s/√n in different scenarios. This formula is used to calculate the standard error of a sample…

You can use one of the following methods to drop multiple columns from a data frame in R using the dplyr package:…

In statistics, there are three commonly used t-tests: One Sample t-test: Used to compare a population mean to some value. Two Sample…

You can use the following basic syntax to convert a table to a matrix in R: my_matrix The following example shows how…

For any given coin flip, the probability of getting “heads” is 1/2 or 0.5. To find the probability of at least one…

Given two events, A and B, to “find the probability of neither A nor B” means to find the probability that neither…