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Free SAT One-variable data: distributions and measures of center and spread Practice Questions
One-variable data questions ask you to read or compare distributions: mean, median, range, and standard deviation as a measure of spread. Most require a comparison or a judgment about skew rather than a computation.
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How the SAT tests one-variable data: distributions and measures of center and spread
You compute or compare center and spread, read histograms and box plots, and reason about how an added value moves the mean versus the median.
Where the points go
Using the mean where the question's skew makes the median the meaningful measure, and treating a larger range as a larger standard deviation.
Every question you miss here is added to your mistake log with the specific error identified, and brought back after three days and again after fourteen — no screenshots, no error journal to keep.
Other Problem-Solving and Data Analysis skills
- Ratios, rates, proportional relationships, and units
- Percentages
- Two-variable data: models and scatterplots
- Probability and conditional probability
- Inference from sample statistics and margin of error
- Evaluating statistical claims: observational studies and experiments