Graphs & Tables
Creating a Bar Graph
- This video explicates how to create a bar graph, which presents categorical data with rectangular bars, using data from a survey.
Histograms
- This video illustrates how and when to use histograms to visualize the frequency distribution of a data set.
Line Graphs
- This video explains how and when to use a line graph to visually represent data, particularly data that changes over time.
Pie Charts
- This video illustrates how and when to use pie charts to visualize data. Pie charts are circular charts divided up into segments (or “slices”) which each represent a value.
Scatter Plots
This video shows how to construct and read scatter plots, which are used to observe relationships between variables.
Box and Whisker Plots
This video explains how to read and construct box and whisker plots (a five-number summary of a set of data), which are used to graphically depict groups of numerical data through their quartiles.
Frequency Tables & Dot Plots
This video explains how to organize data into frequency tables and dot (line) plots.
The Difference between Linear and Logarithmic Scales
This video explains the difference between a linear scale and a logarithmic scale. On a linear scale, the value between any two points will never change. A logarithmic scale is one in which the units on the axis are powers, or logarithms, of a base number. Exponential growth curves are displayed on a logarithmic scale.