Comparing two distributions: Pearson Correlation Coefficient
Discussing various Absolute/Relative measures of dispersion
A detailed discussion on different central tendencies.
Using Open Source Software JASP to measure dispersion, symmetry and curve of the distribution.
Some gossips about mathematicians and a special case of correlation coefficient. We also look at what’s regression, how to apply.
So far we were busy finding one value to describe a distribution, and finding how spread the values are! Now, let’s look at how to compare two distributions!
Standard Deviation If is the frequency distribution, then standard deviation, denoted by Greek letter σ (sigma) is given by where is the arithmetic mean of the distribution and ∑f =N . Mean Deviation Standard Deviation Uses absolute value to assure that final result is positive Squares to make all values positive, then takes positive square…
Central tendency tells us about a number that describes the data – but – not about how ‘spread’ the data is. Meet the tools to measure the spread of data!
Highlights of Lecture on Statistics for Department of Psychology, Martin Luther Christian University
Two mode Central Tendencies: Media and Mode