ParaPro Interpreting Data, Charts, and Graphs 5 — Questions and Answers
Question 1: A pictograph shows each symbol equals 10 students. The row for Monday shows 3.5 symbols. How many students does Monday represent?
- 30 students
- 35 students (Correct answer)
- 38 students
- 40 students
Correct answer: 35 students
3.5 symbols × 10 students per symbol = 35 students.
Question 2: A stacked bar chart shows total books read per class. Class A's bar is divided into Fiction (60%) and Nonfiction (40%), and the total bar height is 50 books. How many nonfiction books did Class A read?
- 10 books
- 20 books (Correct answer)
- 30 books
- 40 books
Correct answer: 20 books
40% of 50 books = 0.40 × 50 = 20 nonfiction books.
Question 3: The mean of five numbers is 14. Four of the numbers are 10, 12, 16, and 18. What is the fifth number?
- 12
- 14 (Correct answer)
- 16
- 18
Correct answer: 14
The total sum must be 14 × 5 = 70; the four known numbers sum to 56, so the fifth is 70 − 56 = 14.
Question 4: A line graph shows temperature readings at 6 a.m., 9 a.m., 12 p.m., 3 p.m., and 6 p.m. The line dips between 3 p.m. and 6 p.m. What does this dip represent?
- Temperature increased between 3 p.m. and 6 p.m.
- Temperature stayed the same between 3 p.m. and 6 p.m.
- Temperature decreased between 3 p.m. and 6 p.m. (Correct answer)
- There was no data recorded after 3 p.m.
Correct answer: Temperature decreased between 3 p.m. and 6 p.m.
A downward dip on a line graph shows the value decreased during that time interval.
Question 5: A bar graph compares the number of students absent each day of the week. Wednesday's bar is the shortest. Which statement is best supported by the graph?
- Wednesday had the highest number of absences
- Wednesday had the lowest number of absences (Correct answer)
- Students prefer Wednesdays the least
- Absences increased after Wednesday
Correct answer: Wednesday had the lowest number of absences
The shortest bar in a bar graph represents the smallest value, so Wednesday had the fewest absences.
Question 6: A data set shows the following values: 5, 7, 7, 9, 11, 13, 13, 13, 15. What is the mode of this data set?
- 7
- 9
- 11
- 13 (Correct answer)
Correct answer: 13
The mode is the value that appears most often; 13 appears three times, more than any other value.
Question 7: A two-way table shows 200 survey responses about students' favorite subject and grade level. The cell for '8th grade / Math' shows 35. The total for 8th graders is 100. What percentage of 8th graders chose Math?
- 17.5%
- 25%
- 35% (Correct answer)
- 50%
Correct answer: 35%
35 out of 100 eighth graders chose Math: 35/100 = 35%.
ParaPro Interpreting Data, Charts, and Graphs 5
A pictograph shows each symbol equals 10 students.
The row for Monday shows 3.5 symbols.
How many students does Monday represent?