Stem and leaf plot is used to plot for a numerical variable. It’s essentially a way to list our data…
Variance represents the average of the squared deviations from the mean. Because we square the deviations, the variance is always…
There are two main kinds of studies, observational studies and, experimental studies. The statistical process can be viewed in the…
In the world of statistics and data analysis, understanding the relationship between two variables is crucial. One of the most…
Previous article discussed the basic contingency table of proportions and percentages. People often want to ask more about relationships between…
Choosing which statistical test to use, given the variables is often confusing for researchers and analyst. One of the major…
Analysis
View AllData is set of observation. This observation can be collected in various ways such as field notes, survey or…
In previous article we discussed about variance and standard deviation, assuming we had a population of data, even though…
Describing Numerical Data In the previous articles we described two kinds of variable numerical and categorical, also known as…
Creating good graphics is a very important part of data visualization. Data visualization is not a science this is…
One issue with range and the interquartile range (IQR) both is that they don’t include information from all the…
