One of the way to measure the variability is to calculate the difference of each observation from the mean.…

We’ve discussed the mean previously about mean or average as a measure of central tendency, let’s explore two other…

Choosing which statistical test to use, given the variables is often confusing for researchers and analyst. One of the…

In previous article we discussed about variance and standard deviation, assuming we had a population of data, even though…

Data is set of observation. This observation can be collected in various ways such as field notes, survey or…

In a box plot, the “box” represents the interquartile range (IQR) of the data. Inside the box, you find…