Curriculum placement
Grade 6. This describes the skill, not a learner estimate.
Describing spread and outliers
Describe spread shape outliers and appropriate summaries
Problem types
- Mean absolute deviation
- Interquartile range from a dot plot
- Which value is typical?
Builds on
- Ordering numbers and absolute value
- Dot plots, histograms, and box plots
- Line plots with fractional lengths · Useful idea
How spread out the fractional measurements are is described by the mean absolute deviation or IQR of the dots.
Leads to
- Comparing two data distributions
- The normal distribution
- Comparing center, spread, and shape · Extend the idea
The mean absolute deviation extends to the standard deviation, which compares the spread of two data sets.
Related skills
- Residuals and correlation · Related idea
A residual is the deviation of a data point from a line, as a deviation is the distance of a data value from the mean.
- Median and spread of signed data · Shared foundations
Open the interactive map to explore lessons and skill connections.