Category: Probability & Statistics

Suppose I asked the question, what is the probability that a randomly selected teenager drinks coffee? We may think that that number is rather low. Many middle schoolers are teenagers and there...

Median tells us about the center of a distribution, which can help us to understand a data set.  However, median is just one statistical measure for data, and it has both advantages and...

Line charts are sometimes used in data analysis and statistics to represent a given set of values.  Line charts are useful for visualizing how one variable changes with another. So, what is a...

Bar graphs (or bar charts) are often used in data analysis and statistics to represent a given set of values.  However, this still raises the question of what exactly a bar graph tells...

Pie charts are sometimes used to give an alternative way to visualize data.  So, it helps to have a good sense of what they are and what they tell us about a data set. So, what is a pie chart...

Scatter plots are used all the time for research in science, math, and other disciplines.  So, it helps to have a good sense of what they are used for and what they tell us about a data...