Graphs and Data — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. The tallest bar on the graph belongs to blue.
Blue received 9 votes, the highest count in the survey. On a bar graph, the tallest bar always belongs to the largest number.
2. The shortest bar on the graph belongs to orange.
Orange got only 2 votes, less than any other color. The shortest bar belongs to the category with the smallest count.
3. How many students chose purple? 8.
Purple received 8 votes in the survey, which is the value shown for that color. Reading the height of the purple bar gives the answer.
4. How many more chose blue than yellow? 4.
Blue had 9 and yellow had 5, and 9 - 5 = 4. Subtracting the smaller count from the larger one shows the difference.
5. Red and green together got 10 votes.
Red got 7 votes and green got 3, and 7 + 3 = 10. Adding the two counts gives the combined total.
6. The total number of students surveyed is 34.
Adding every color gives 7 + 9 + 3 + 5 + 8 + 2 = 34. The total surveyed is the sum of every bar on the graph.
7. The title of a bar graph tells what the graph is about.
The title sits at the top of a graph and tells the reader the topic of the data. Without it, you wouldn't know what the bars are showing.
8. Purple got 5 more votes than green.
Purple had 8 votes and green had 3, and 8 - 3 = 5. The difference between the two counts is 5.
9. To find the total, you add all the bar values together.
Finding the total means combining every value into one number, which is exactly what addition does. You add the bar values together to get the grand total.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
Which color got the most votes?
→ blue
34
How many voted for yellow?
→ 5
5
How many more like red than orange?
→ 5 more
blue
How many students voted in all?
→ 34
5 more
Blue is the tallest bar so it got the most votes; yellow had 5; red (7) is 5 more than orange (2); and the survey total is 7 + 9 + 3 + 5 + 8 + 2 = 34. Each match comes straight from reading or comparing values on the graph.