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

   Minutes practiced. 5 minutes: 1 student. 10 minutes: 2 students. 15 minutes: 3 students. 20 minutes: 3 students. 25 minutes: 7 students.

2. 1.

   Kira tracks how many minutes 16 band members practiced. What is the median number of minutes?

   20

3. Frequency table

   Pets at home. 0 pets: 6 students. 1 pet: 4 students. 2 pets: 3 students. 3 pets: 1 student. 4 pets: 5 students.

4. 2.

   Luz records how many pets 19 students have at home (one has a very long turtle). What is the median number of pets?

   1

5. Frequency table

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

6. 3.

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

   5
7. 4.

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

   • Plant A, by 1 cm each week, because 3 cm each week beats 2 cm.
   • 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.
8. 5.

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

   • 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.
   • Neither: both sunflowers end at 19 cm, so they grew equally.
   • Sunflower B, by 1 cm each week, because 3 cm each week beats 2 cm.
9. 6.

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

   • 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.
   • Seedling B, because it started taller than Seedling A did, at 10 cm.
   • Seedling B, because it is the taller seedling at the end of week 3.
10. 7.

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

    • Flower A, because it started taller and stays taller than Flower B.
    • 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.
11. 8.

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

    • A line graph, because it joins the hours in order and shows the changes.
    • 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.
12. 9.

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

    • 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.
    • A line graph with one line, because one line is the easiest to read for plants.
13. 10.

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

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