HUNTERTUTORING

Study Guide — 7.SP.A.2

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Use data from a random sample to draw inferences about a population w…

Describe data distributions and use probability models to predict outcomes.

What this standard means

  • Use data from a random sample to draw inferences about a population with an unknown characteristic of interest. Generate multiple samples (or simulated samples) of the same size to gauge the variation in estimates or predictions. For example, estimate the mean word length in a book by randomly sampling words from the book; predict the winner of a school election based on randomly sampled survey data. Gauge how far off the estimate or prediction might be.
  • Apply use data from a random sample to draw inferences about a population w… with models and explanation
  • Summarizes data with center and spread measures

_See printable PDF for diagram._

How to use the 20 practice sets

| Sets | When to use | | --- | --- | | 1–5 | Intro — explore together, short written items | | 6–10 | Core skills — diagrams and written practice | | 11–15 | Mixed review — explain thinking | | 16–20 | Stretch — word problems and mastery tasks |

Pacing: 10–15 minutes per session.

How to practice

1. Calculate mean, median, and range from data sets 2. Use dot plots and box plots to compare groups 3. List sample space before finding probability

_See printable PDF for diagram._

Common mistakes

  • Confusing mean and median
  • Probability greater than 1 or less than 0
  • Ignoring all outcomes in the sample space

Review and practice tests

1. Start Review 1/10 when sets 1–3 feel comfortable. 2. Move up one review level with little help. 3. Use Practice Test 4/10–6/10 for mid-standard checks. 4. Practice Test 10/10 is the mastery bar for 7.SP.A.2.

  • [ ] Summarizes data with center and spread measures
  • [ ] Creates and interprets statistical displays
  • [ ] Computes simple and compound probabilities

Materials for this standard

  • Practice Problems — 20 printable sets (computational and word problems)
  • Word Problems — 20 word-only sets plus 10 difficulty-tier sets
  • Review — 10 difficulty levels
  • Practice Test — 10 difficulty levels
  • Answer key — for parents and tutors

For your personal study only. Copying, printing, screenshotting, or sharing this material is not permitted and may result in loss of access.

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