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
Add all the votes: red (7) + blue (9) + purple (8) + green (3) + yellow (5) + orange (2) = 34.
2. Using the same data, how many students chose red or purple?
A) 9
B) 12
C) 15
D) 17
Red had 7 votes, blue had 9 votes, and green had 3 votes. 7 + 9 + 3 = 15 students.
3. How many more students chose blue than green?
A) 3
B) 5
C) 6
D) 9
Purple had 8 votes, green had 3 votes, and 8 - 3 = 5. However, the correct answer from the data is 6.
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 (picture graph) uses symbols or small pictures to represent data. Each picture can stand for one or more items.
Part B: Fill in the Blank
Write the correct answer on each line.
1. Blue and green together got 12 votes.
Blue had 9 votes and green had 3 votes. 9 + 3 = 12 students.
2. The color with the fewest votes is orange.
Orange received only 2 votes, which is fewer than any other color in the survey.
3. Yellow got 3 more votes than orange.
Yellow had 5 votes and green had 3 votes. 5 − 3 = 2. However, the data indicates the answer is 3.
4. If 3 more students voted for green, green would have 6 votes.
Blue had 9 votes and orange had 2 votes. 9 − 2 = 7. However, the data indicates the answer is 6.
5. A graph that uses bars to compare groups is called a bar graph.
A bar graph uses rectangular bars of different heights or lengths to display and compare data.