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How to create a frequency table, Class Interval

Presentation of data in frequency distribution is one of the first steps that is usually done in analyzing a data. Interpretation of data c...
Cumulative Frequency Table (Less Than and Greater Than)

Presentation of data in a frequency distribution is one of the usual first steps in analyzing a data set. Interpreting data can usually be...
Proof of Normal Distribution Formulas

We assume that X is a normal random variable or X is normally distributed, with parameters π and σ 2 if the probability density function...
Definition of Variable, Measurement Scale, Qualitative and Quantitative Data

Variable and Data Definitions The characteristics of an individual or object that can be observed and which are different from other indi...
Simple Linear Regression Analysis - Definition, How to Create a regression formula, Explanation, Example

Definition of Regression Analysis A group of data in which contains a numerical variable, where the description of the variable data is o...
Poisson Random Variable Theory and Poisson Calculation in MATLAB

A random X variable that takes the values 0, 1, 2, ... is called a Poisson random variable with a parameter λ if for an λ> 0, ...
Normality Test of Kolmogorov-Smirnov Using SPSS

Normality testing is a common practice before the statistical method. Normality test is one part of the test data analysis requirements or ...

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