Dot plots and histograms

Answer Key - Grade 6 Math Worksheet - Challenge Me

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

1. Read this first

   Use this

   Data (practice minutes): 10, 15, 20, 20, 22, 25, 25, 27, 30, 20, 35, 25, 21, 24, 40. The bars to draw: 10 up to 15, 15 up to 20, 20 up to 25, 25 up to 30, 30 up to 35, 35 up to 40, 40 up to 45. A value on a line goes in the bar that starts there. A bar's height is how many values it holds.

2. 1.

   Ari plays in a band. Fifteen band members logged minutes of practice (the tuba logged mostly sighs). The bars are 5 minutes wide. How tall is the bar for 20 up to 25?

   6
3. 2.

   Bo measures fourteen sunflower seedlings in centimeters (all of them lean toward the window). The bars are 5 centimeters wide. How tall is the bar for 35 up to 40?

   4

4. Use this

   A value on a line goes in the bar that starts there. A bar's height is how many values it holds.

5. 3.

   Jun tracked fifteen bike rides, grouped by length in miles (the bell rang at every hill). The bars are 5 miles wide. How tall is the bar for 10 up to 15?

   7
6. 4.

   Students timed their homework, and Kira drew the histogram. It shows 18 students in all, but a sticky note covers one bar. How tall is the covered bar?

   8
7. 5.

   Milo graphed the minutes students read last night. The graph shows 21 students in all, but a napping cat covers one bar. How tall is the covered bar?

   9
8. 6.

   Kids counted how many times they could jump rope without a miss, and Noah drew the graph. It shows 20 kids in all, but one bar is covered. How tall is the covered bar?

   6
9. 7.

   Ren helps a librarian group the books on a cart by number of pages (the cart squeaks). How many books have 60 pages or more?

   12
10. 8.

    Tala's class measured its sunflower plants in centimeters (one plant keeps staring at the sun). How many plants are 20 centimeters tall or more?

    13
11. 9.

    A teacher grouped the quiz scores of a class, and Zee reads the histogram. How many students scored 80 points or more?

    8
12. 10.

    Students logged the minutes they spent riding a bike yesterday, and Ari added up the bars (helmet hair was reported). How many students are in the data set?

    27