Grade 7 STAAR Data Analysis

Name:

Date:

📊 Part 1: Multiple Choice Data Analysis

1. The table shows the number of books read by students in Ms. Garcia's class over 4 months:

September: 45 books | October: 52 books | November: 38 books | December: 41 books

What is the mean number of books read per month?

A) 42 books

B) 44 books

C) 46 books

D) 48 books

2. A coordinate plane shows points representing (hours studied, test score). The point (3, 85) means:

A) 85 hours studied, score of 3

B) 3 hours studied, score of 85

C) 3 students, 85 hours total

D) 85 students, 3 hours each

3. The data set shows daily temperatures in Odessa, TX: 78°F, 82°F, 79°F, 85°F, 80°F. What is the range?

A) 5°F

B) 7°F

C) 79°F

D) 82°F

4. Which statement about data collection is TRUE?

A) A sample must include everyone in the population

B) Random sampling helps reduce bias

C) Larger samples are always less accurate

D) Survey questions should lead people to specific answers

📈 Part 2: Problem Solving with Tables and Graphs

5. The table shows pizza sales at different prices:

Price: $8 → 50 pizzas sold | Price: $10 → 40 pizzas sold | Price: $12 → 30 pizzas sold | Price: $14 → 20 pizzas sold

a) Plot these points on a coordinate plane where x = price and y = pizzas sold.

b) Describe the relationship between price and number of pizzas sold:

6. A scatter plot shows the relationship between hours of sleep and test scores for 7th graders. If the points generally go from bottom-left to top-right, what can you conclude?

7. Create a survey question to find out students' favorite school lunch. Write one example of a BIASED question and one example of an UNBIASED question:

Biased: ________________________________________________

Unbiased: ______________________________________________

🎯 Part 3: Advanced Data Integration

8. A middle school tracked students' daily screen time and physical activity minutes:

Student A: 120 min screen, 45 min activity | Student B: 90 min screen, 60 min activity

Student C: 180 min screen, 30 min activity | Student D: 60 min screen, 75 min activity

a) Which student has the best ratio of physical activity to screen time? Show your work:

b) If you plotted this data with screen time on the x-axis and activity time on the y-axis, which quadrant would contain the healthiest lifestyle patterns? Explain your reasoning:

9. Challenge Problem: Design a simple experiment to test if listening to music affects math test scores. Describe your method and identify one potential source of bias: