Line graphs, double bar graphs and frequency tables

Answer Key - Grade 6 Math Worksheet - Challenge Me

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

1. 1.

   Kira reads a double bar graph of pets owned in two classes. What percent of all the pets are cats?

   44
2. 2.

   Luz reads a double bar graph of sports votes from two grades. What percent of all the votes were for tennis?

   28
3. 3.

   Milo reads a double bar graph of paper colors used by two classes. What percent of all the sheets were red?

   36
4. 4.

   Noah says dogs got three times as many votes as cats, because the dog bar in Graph Y is three times as tall. What is true?

   • Dogs got three times as many votes, because Graph Y shows the votes just as they are.
   • Dogs got 4 more votes out of 80, and Graph Y starts at 36 so it exaggerates the gap.
   • One graph must have wrong votes, because the same data cannot look different on two graphs.
   • Cats and dogs tied, because 38 and 42 are so close that the difference does not count.
5. 5.

   Pia says Class B collected twice as many cans as Class A, because its bar in Graph Y is twice as tall. What is true?

   • One graph must have the wrong counts, because the same cans cannot give two different pictures.
   • The classes tied, because 70 and 76 are so close that the difference does not count.
   • Class B collected twice as many cans, because Graph Y shows the cans just as they are.
   • Class B collected 6 more cans out of 146, and Graph Y starts at 64, so it exaggerates.
6. 6.

   Ren says Saturday's crowd was one and a half times Friday's, because its bar in Graph Y is that much taller. What is true?

   • Saturday's crowd was one and a half times Friday's, because Graph Y shows the crowds as they are.
   • The crowds were the same, because 120 and 130 are close enough to be equal.
   • One graph must have wrong counts, because the same crowds cannot look different.
   • Saturday had 10 more people out of 250, and Graph Y starts at 100, so it exaggerates.
7. 7.

   Tala says Team Blue scored twice as many points as Team Red, because its bar in Graph Y is twice as tall. What is true?

   • One graph must be a mistake, because the same points cannot look different on two graphs.
   • The teams tied, because 52 and 56 are so close that the difference does not matter.
   • Team Blue scored 4 more points out of 108, and Graph Y starts at 48, so it exaggerates.
   • Team Blue scored twice as many points, because Graph Y shows the points just as they are.
8. 8.

   Zee tracks a plant for four weeks. Which claim does the line graph support?

   • The plant will reach 14 cm at week 6, because it keeps growing.
   • The plant grew fastest between week 2 and week 3, gaining 4 cm.
   • The plant grew fastest at week 4, because that is the highest point.
   • The plant grew fastest between week 1 and week 2, gaining 4 cm.
9. 9.

   Temperature in degrees. 8 a.m.: 52. 10 a.m.: 58. Noon: 70. 2 p.m.: 74. 4 p.m.: 72. Ari records the temperature every two hours. Which claim does the line graph support?

   • The temperature rose fastest at 2 p.m., because that is the highest point.
   • The temperature rose fastest between 10 a.m. and noon, gaining 12 degrees.
   • The temperature rose fastest between 8 a.m. and 10 a.m., gaining 12 degrees.
   • The temperature will be 76 degrees at 6 p.m., because it was rising.
10. 10.

    Bo watches a tank drain and graphs the water every two minutes. Which claim does the line graph support?

    • The tank drained fastest at minute 0, because that is the highest point.
    • The tank drained fastest between minute 6 and minute 8, losing 8 liters.
    • The tank drained fastest between minute 0 and minute 2, losing 8 liters.
    • The tank will be empty at minute 14, because it keeps draining.