Calculate and interpret mean, median, mode, range, quartiles, interquartile range, and outliers, and construct and interpret box-and-whisker plots to compare center and spread while considering the effect of extreme values. Distinguish categorical, numerical, discrete, and continuous data; identify populations, samples, and variables; evaluate sampling methods for bias; and recognize misleading data displays and statistical claims. Construct scatter plots, describe the direction and strength of associations, draw and use informal lines of best fit for predictions within or near the observed range, and distinguish interpolation from less reliable extrapolation without inferring causation.
On this page:
- Master skills like “Construct scatter plots”, “Construct box-and-whisker plots”, and “Identify outliers in a data set” with unlimited, free practice problems
- Download (or modify) free worksheets on Data Analysis you can use at home or in class with practice problems across all skills in this group including “Interpret box-and-whisker plots”, “Evaluate sampling methods for bias”, “Calculate mean, median, mode, and range”.
- Start working on adaptive units like “Probability and Statistics - Quartiles and Box Plots - Intro” or “Data and Graphs (Scatter Plots) - Intro” that include these skills and will introduce and scaffold the skills carefully for maximum learning.
Data Analysis: Individual Skills
Master 14 individual skills with free practice problems. Mouseover to see the skill's practice problems. Create a free account to track your progress.
Your results
- Calculate mean, median, mode, and range
- Construct box-and-whisker plots
- Construct scatter plots
- Describe the direction and strength of an association
- Determine quartiles and interquartile range
- Distinguish categorical and numerical data
- Distinguish discrete and continuous data
- Distinguish interpolation from extrapolation
- Evaluate misleading data displays and statistical claims
- Evaluate sampling methods for bias
- Identify outliers in a data set
- Identify populations, samples, and variables
- Interpret box-and-whisker plots
- Use a line of best fit to make predictions
Practice 'Calculate mean, median, mode, and range'
Select any skill in this group by hovering over the list above. Unlimited free practice problems, automatically graded.
Hover a skill above to start practicing.
Download/Modify Free Grade 9 'Data Analysis' Worksheet
Print this free 'Data Analysis' worksheet to practice these skills away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
This Worksheet Includes:
- Calculate mean, median, mode, and range
- Construct box-and-whisker plots
- Construct scatter plots
- Describe the direction and strength of an association
- Determine quartiles and interquartile range
- Distinguish categorical and numerical data
- Distinguish discrete and continuous data
- Distinguish interpolation from extrapolation
Units Teaching These Skills
These adaptive units introduce, teach, or reinforce skills in this group (Data Analysis) through scaffolded problems that grow in difficulty as concepts are understood.