Graphs and Data — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. A class voted on colors: red 7, blue 9, green 3, yellow 5, purple 8, orange 2. How many students were surveyed?
A) 30
B) 32
C) 34
D) 36
Adding every color gives 7 + 9 + 3 + 5 + 8 + 2 = 34. Totaling all groups together is how you find the number surveyed.
2. Using the same data, how many students chose red or purple?
A) 9
B) 12
C) 15
D) 17
Red had 7 votes and purple had 8 votes, and 7 + 8 = 15. Adding two groups together gives the combined choice.
3. How many more students chose blue than green?
A) 3
B) 5
C) 6
D) 9
Blue had 9 and green had 3, and 9 - 3 = 6. Subtraction tells us how many more one group received than another.
4. Which type of graph uses pictures with a key to show data?
A) Bar graph
B) Pictograph
C) Number line
D) Tally chart
A pictograph uses small pictures along with a key that explains how many each picture represents. The key is what makes a pictograph different from other kinds of graphs.
Part B: Fill in the Blank
Write the correct answer on each line.
1. Blue and green together got 12 votes.
Blue got 9 votes and green got 3 votes, and 9 + 3 = 12. Adding the two counts gives the combined total.
2. The color with the fewest votes is orange.
Orange received only 2 votes, lower than any other color in the survey. The smallest number on the graph belongs to the least popular choice.
3. Yellow got 3 more votes than orange.
Yellow got 5 votes and orange got 2, and 5 - 2 = 3. The difference between the two counts is 3.
4. If 3 more students voted for green, green would have 6 votes.
Green currently has 3 votes, and adding 3 more gives 3 + 3 = 6. Adding new votes increases the total of that group.
5. A graph that uses bars to compare groups is called a bar graph.
A bar graph uses rectangular bars of different lengths to compare groups side by side. The taller the bar, the larger the count it represents.