STAT 101 · Course unit
Statistical summaries: inspect a dataset
Compare center and spread using mean, median and range.
Practice in MathBeasts (opens the existing external demo in a new tab)
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- 01 Course challenge
- 02 Diagnostic
- 03 Targeted repair
- 04 Mastery & return
Statistical summaries repair bench
Mean is sum divided by count; median is the middle of sorted values; range is maximum minus minimum.
Worked example
For 2, 4, 9: mean = 15/3 = 5, median = 4, range = 7.
Two correct guided practice answers unlock two new transfer checks.
Unit prerequisite tools
Statistical summaries
diagnostic-recommended
Not tested yet
Fractions
on-demand
Available whenever needed
Order of operations
on-demand
Available whenever needed