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.

   Students counted the pages they read this week, and Luz made the graph. It shows 16 students in all, but a very large bookmark covers one bar. How tall is the covered bar?

   5
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.

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

    8
11. 9.

    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
12. 10.

    A gym class timed one lap around the gym in seconds, and Bo reads the histogram (the sneakers squeaked). How many students are in the data set?

    34