Statology
How to Calculate Expected Value of X^2
For a random variable, denoted as X, you can use the following formula to calculate the expected value of X2:
E(X2) = Σx2 * p(x)
where:
Σ:...
Statology
How to Calculate Sxx in Statistics (With Example)
In statistics, Sxx represents the sum of squared deviations from the mean value of x.
This value is often calculated when fitting a simple linear...
Statology
How to Interpret a P-Value Less Than 0.001 (With Examples)
A hypothesis test is used to test whether or not some assumption about a population parameter is true.
Whenever we perform a hypothesis test, we...
Statology
How to Interpret a Curved Residual Plot (With Example)
Residual plots are used to assess whether or not the residuals in a regression model are normally distributed and whether or not they exhibit...
Statology
When to Use s / sqrt(n) in Statistics
In statistics, you will encounter the formula s/√n in different scenarios.
This formula is used to calculate the standard error of a sample mean.
In the formula,...
Statology
How to Drop Multiple Columns Using dplyr (With Examples)
You can use one of the following methods to drop multiple columns from a data frame in R using the dplyr package:
1. Drop Multiple...
Statology
How to Calculate Degrees of Freedom for Any T-Test
In statistics, there are three commonly used t-tests:
One Sample t-test: Used to compare a population mean to some value.
Two Sample t-test: Used to compare...
Subscribe
- Never miss a story with notifications
- Gain full access to our premium content
- Browse free from up to 5 devices at once
Must read