# Statistical Calculations

1. The mean, or the average of a data set, is one way to measure the center of a numerical data set. The notation for the mean is The formula for the mean is where x represents each of the values in the data set.
2. Some variables are categorical and identify which category or group an individual.

## What is Data?

The dice probability calculator is a great tool if you want to estimate the dice roll probability over numerous variants. There are may different polyhedral die included, so you can explore the probability of a 20 sided die as well as that of a regular cubic die. Basic Statistics Formulas Population Measures Mean = 1 n X x i (1) Variance ˙2 = 1 n X (x i x)2 (2) Standard Deviation ˙= r 1 n X (x i x)2 (3) Sampling Sample mean x= 1 n X x i (4) Sample variance s2 x = 1 n 1 X (x i x)2 (5) Std. Deviation s x = r 1 n 1 X (x i x)2 (6) z-score.

• Advanced: Analog and Digital Data

## How to Show Data

• Frequency Distribution and Grouped Frequency Distribution ## Measures of Central Value

• Calculate the Mean Value and The Mean Machine  • More Advanced:Mean, Median and Mode from Grouped Frequencies

## Comparing Data

• Correlation and Correlation Calculator

## Statistical Calculations Are Extensively Done With

• Least Squares RegressionLeast Squares Calculator

## Random Variables ## Statistical Calculator App

• Quincunx and Quincunx Explained