Line graphs, double bar graphs and frequency tables

Answer Key - Grade 6 Math Worksheet

Circle the best answer, or write your answer on the line.

1. Read this first

   Frequency table

   Books read. 1 book: 7 students. 2 books: 2 students. 3 books: 3 students. 4 books: 4 students. 5 books: 2 students.

2. 1.

   Jun makes a frequency table of the books 18 students read this month. What is the median number of books?

   2.5

3. Frequency table

   Goals scored. 2 goals: 2 players. 3 goals: 2 players. 4 goals: 3 players. 5 goals: 4 players. 6 goals: 7 players.

4. 2.

   Milo lists the goals scored by 18 players in a season. What is the median number of goals?

   5
5. 3.

   Noah graphs two plants on one line graph. Which plant grew faster, and by how much each week?

   • Neither: both plants end at 14 cm, so they must have grown equally fast.
   • Plant A, by 4 cm each week, because 12 cm minus 8 cm is 4 cm.
   • Plant B, because it started taller than Plant A and stayed ahead the whole time.
   • Plant A, by 1 cm each week, because 3 cm each week beats 2 cm.
6. 4.

   Pia graphs two sunflowers on one line graph. Which sunflower grew faster, and by how much each week?

   • Sunflower B, by 1 cm each week, because 3 cm each week beats 2 cm.
   • Neither: both sunflowers end at 19 cm, so they grew equally.
   • Sunflower A, because it started taller than Sunflower B did.
   • Sunflower B, by 5 cm each week, because 15 cm minus 10 cm is 5 cm.
7. 5.

   Ren graphs two seedlings on one line graph. Which seedling grew faster, and by how much each week?

   • Seedling B, because it is the taller seedling at the end of week 3.
   • Seedling B, because it started taller than Seedling A did, at 10 cm.
   • Seedling A, by 6 cm each week, because 15 cm minus 9 cm is 6 cm.
   • Seedling A, by 2 cm each week, because 5 cm each week beats 3 cm.
8. 6.

   Tala graphs two flowers on one line graph. Which flower grew faster, and by how much each week?

   • Flower A, because it ends taller than Flower B at week 4.
   • Neither: both grew 3 cm each week, so they grew at the same rate.
   • Flower A, by 6 cm each week, because 24 minus 18 is 6.
   • Flower A, because it started taller and stays taller than Flower B.
9. 7.

   Zee wants to show how the temperature changed hour by hour on one hot day. Which display is best?

   • A double line graph, because two lines show twice as much of the day.
   • A frequency table, because it counts how often each temperature appears.
   • A double bar graph, because each hour gets its own pair of bars to compare.
   • A line graph, because it joins the hours in order and shows the changes.
10. 8.

    Ari wants to compare how Grade 6 and Grade 7 voted for each of three snacks. Which display is best?

    • A line graph, because the line joins one snack to the next one.
    • A double line graph, because two lines compare the two grades across the snacks.
    • A double bar graph, because it puts both grades side by side for each snack.
    • A frequency table, because it lists the votes for both grades in rows.
11. 9.

    Bo wants to compare how two plants grew week by week. Which display is best?

    • A line graph with one line, because one line is the easiest to read for plants.
    • A double bar graph, because each week needs a pair of bars for the two plants.
    • A frequency table, because it counts how many plants there are each week.
    • A double line graph, because each plant gets its own line that shows growth.
12. 10.

    Esme wants to compare how many dogs, cats and fish two classes own. Which display is best?

    • A line graph, because the line joins the dogs, cats and fish in a row.
    • A double line graph, because two lines compare the two classes for each pet.
    • A double bar graph, because it shows both classes side by side for each pet.
    • A frequency table, because it adds up the counts for both classes together.