Study Guide — 7.SP.B.4
Use measures of center and measures of variability for numerical data…
Describe data distributions and use probability models to predict outcomes.
What this standard means
- Use measures of center and measures of variability for numerical data from random samples to draw informal comparative inferences about two populations. For example, decide whether the words in a chapter of a seventh-grade science book are generally longer than the words in a chapter of a fourth-grade science book.
- Apply use measures of center and measures of variability for numerical data… 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.B.4.
- [ ] 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