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Statistics & Data Interpretation — Core Skills

The core idea, one worked example, and short practice.

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Statistics & Data Interpretation: The Basics

A data set is a list of numbers, and the SAT asks the same three questions about it over and over.

The mean is the average. Add every number in the list, then divide by how many numbers there are. For 4, 8, 6, 10, and 2, the total is 30, and 30 divided by 5 is 6.

The median is the middle number after you put the list in order from smallest to largest. Sorting first is the step people skip, so write the sorted list down. If the list has an even number of values, add the two middle numbers and divide by 2.

The range is the biggest number minus the smallest number. For 2, 4, 6, 8, 10 the range is 10 minus 2, which is 8.

Mean and median describe the center of a list. Range describes how spread out it is.

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What is Statistics & Data Interpretation — Core Skills?▾
The core idea, one worked example, and short practice.
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Start by reading the study notes and working through the examples on this page. Then use the flashcards to test your recall. Regular review and active practice are key to retention.
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Statistics & Data Interpretation — Core Skills is part of the SAT Prep course on Study Mondo, specifically in the SAT Core Skills Track section. You can explore the full course for more related topics and practice resources.