Western Reserve Public Media | QuizBus: Dealing with Data

Resources

Categorical and Measurement Data
(Qualitative and Quantitative Data)

Categorical Data (Qualitative) — Categorical data identifies a class or category for an object or an observation based on some qualitative trait. (e.g. , gender, male and female, rankings like good or bad)

Measurement Data (Quantitative) — Measurement data has a numerical value based on quantitative data that could be placed on a number line.

How can you DISPLAY the different types of data?

Categorical

Measurement

Pie Graphs

Bar Graphs

Picture Graphs

Histograms

Stem-and-Leaf Plots

Dot Plots

Line Plots

Box-and-Whisker Plots

Scatter Plots (two variables)

How can you analyze the different types of data?

Categorical

Measurement

Counts

Percents

Measures of Center — mean, median, mode, mid range

Measures of Spread — range, standard deviation, interquartile range

Prediction (sometimes)