Interpreting Data, Charts, and Graphs Flashcards

A bar graph shows the number of books read by students in four months: January (8), February (5), March (12), April (9). What is the total number of books read over the four months?

Answer: 34

8 + 5 + 12 + 9 = 34. Reading data from a bar graph and summing is a fundamental data interpretation skill.

A pie chart shows how a student spends 24 hours in a day: Sleep 35%, School 30%, Homework 15%, Recreation 20%. How many hours does the student spend on homework?

Answer: 3.6 hours

15% of 24 hours = 0.15 × 24 = 3.6 hours of homework.

A line graph shows a city's average temperature from January through June: 32°F, 35°F, 45°F, 58°F, 68°F, 78°F. What is the trend shown by the graph?

Answer: Temperatures are increasing over time

Each month shows a higher temperature than the previous, indicating a consistent upward (increasing) trend from January through June.

A table shows test scores for five students: Ana 85, Ben 92, Cara 78, Dan 88, Eva 95. What is the range of the scores?

Answer: 17

Range = maximum - minimum = 95 - 78 = 17. Range measures the spread of data.

A paraprofessional shows a student a double bar graph comparing boys' and girls' favorite sports. The student asks what the purpose of using two bars side by side is. The BEST answer is:

Answer: It allows direct visual comparison between two groups (boys and girls) for each category (sport)

Double bar graphs allow side-by-side comparison of two groups across the same categories, making differences and similarities immediately visible.

A frequency table shows how many students scored in each range: 90–100 (8 students), 80–89 (12 students), 70–79 (6 students), below 70 (4 students). What percentage of students scored 80 or above?

Answer: 66.7%

Students scoring 80+ = 8 + 12 = 20. Total students = 8 + 12 + 6 + 4 = 30. Percentage = 20/30 × 100 = 66.7%.