Achievement Test Data Interpretation and Analysis 1 — Questions and Answers
Question 1: A bar graph shows monthly rainfall totals: Jan=2in, Feb=3in, Mar=5in, Apr=4in. Which month had the highest rainfall?
- January
- February
- March (Correct answer)
- April
Correct answer: March
March had 5 inches of rainfall, which is greater than January (2), February (3), and April (4).
Question 2: A pie chart shows how a student spends 24 hours: Sleep 33%, School 25%, Homework 17%, Free Time 25%. How many hours does the student spend on homework?
- 4 hours
- 4.08 hours (Correct answer)
- 6 hours
- 8 hours
Correct answer: 4.08 hours
17% of 24 hours = 0.17 × 24 = 4.08 hours.
Question 3: A line graph shows a city's population growing from 10,000 in 2000 to 15,000 in 2010. What was the percent increase?
- 25%
- 33%
- 50% (Correct answer)
- 150%
Correct answer: 50%
Percent increase = (15,000 − 10,000) / 10,000 × 100 = 50%.
Question 4: A table shows test scores for 5 students: 72, 85, 90, 68, 95. What is the median score?
- 68
- 72
- 85 (Correct answer)
- 90
Correct answer: 85
Arranged in order: 68, 72, 85, 90, 95 — the middle (third) value is 85.
Question 5: A double bar graph compares boys' and girls' favorite sports. If 40 boys and 25 girls chose soccer, how many total students chose soccer?
- 15
- 40
- 55
- 65 (Correct answer)
Correct answer: 65
Total students = 40 boys + 25 girls = 65 students.
Question 6: A frequency table shows the number of books read per month: 0 books=5 students, 1 book=8 students, 2 books=4 students, 3 books=3 students. How many students were surveyed in total?
- 12
- 16
- 20 (Correct answer)
- 25
Correct answer: 20
Total = 5 + 8 + 4 + 3 = 20 students.
Question 7: A scatter plot shows a positive correlation between hours studied and test grades. What does a positive correlation indicate?
- As hours studied increase, grades decrease
- As hours studied increase, grades also increase (Correct answer)
- Hours studied have no effect on grades
- Grades cause students to study more hours
Correct answer: As hours studied increase, grades also increase
A positive correlation means both variables move in the same direction — more study hours are associated with higher grades.
Achievement Test Data Interpretation and Analysis 1
A bar graph shows monthly rainfall totals: Jan=2in, Feb=3in, Mar=5in, Apr=4in.
Which month had the highest rainfall?