Describing Numerical Data In the previous articles we described two kinds of variable numerical and categorical, also known as quantitative…
There is an important distinction between a sample of data and population of data. So, let’s take a research question…
Analysis
View AllCreating good graphics is a very important part of data visualization. Data visualization is not a science this is…
Imagine you’re a teacher assessing student performance in a math exam where scores range from 0 to 100. You’ve…
Bar Graph-two categorical variable In the previous article, we have discussed tabulating and graphing one categorical variable through table…
The Challenger disaster occurred on January 28, 1986, during the launch of the Space Shuttle Challenger. The Space Shuttle…
Variance represents the average of the squared deviations from the mean. Because we square the deviations, the variance is…
