454 POSTS

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### How to Find Coefficient of Skewness (With Examples)

The Coefficient of Skewness can be calculated using the formula, Coefficient of Skewness = (X̄ - Mode)/σ. Here, X̄ is the mean of the data values.σ is the standard deviation. Sometimes, a given set of data values can have...

### How to Calculate Sxy (Formula & Examples)

The Sxy value can be calculated using the formula, Sxy = Σ (Xi – X̄)(Yi - Ȳ). The quantity Sxy in statistics is used to calculate the regression coefficient and correlation coefficient. In this article, we...

### How to Find Median for Grouped Data (with Examples)

The median of a distribution is the value of the variable which divides it into two equal parts. It is the value such that the number of observations above it is equal to the...

### Can the Eigenvalue of a Matrix be Zero? What does 0 Eigenvalue mean?

It is indeed possible for a matrix to have an eigenvalue that is equal to zero. If a square matrix has an eigenvalue of zero, then it means that the matrix is singular (not...

### Discrete vs Continuous Variables (With Examples)

A variable in statistics is an unknown numerical quantity whose value cannot be known in advance but for whom various probabilities can be calculated. For example, the value taken by the uppermost face of...

### Moment Generating Function of Normal Distribution (Step by Step Proof)

In this article, we explain how to derive the moment generating function (MGF) of the normal distribution. We first calculate the MGF for a standard normal distribution and use a change of variables to...

### Sxx, Sxy, and Syy Equations

The Sxx, Sxy, and Syy equations are given below. These formulas can be used to calculate the values of Sxx, Sxy, and Syy which are very useful quantities. Sxx, Sxy, and Syy Equations (Formula): The Sxx,...

### How to Use Slovin’s Formula (with Examples)

Slovin's Formula is used to determine what sample size should be chosen to study a given population given an acceptable margin of error. Slovins formula is given as: n = N/(1 + Ne2). 'n' denotes the...