Dot plots and histograms

Answer Key - Grade 6 Math Worksheet

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

1. 1.

   A sixth-grade class wrote down the hours each student slept last night, and Kira made a dot plot (a few yawns were spotted). How many students are in the data set?

   25
2. 2.

   A science class measured its sunflower plants to the nearest centimeter, and Luz drew the dot plot. How many plants are in the data set?

   29
3. 3.

   Students in another class wrote down the hours they slept last night, and Tala made the dot plot. How many students slept 9 hours or more?

   23
4. 4.

   Runners rounded their lap times to the nearest five seconds, and Zee made a dot plot (the stopwatch cheered). How many runners took 60 seconds or more?

   12
5. 5.

   A third class counted its hours of sleep, and Ari made the dot plot. How many students slept less than 9 hours?

   14
6. 6.

   Each dot is one student. Students counted the pages they read each night, and Bo made a dot plot. How many students read fewer than 15 pages?

   21
7. 7.

   Twelve students timed their homework, and Esme grouped the times in a histogram with bars 10 minutes wide. How tall is the bar for 20 up to 30?

   5
8. 8.

   Twelve bean plants were measured in centimeters, and Jun sorted them into bars 10 centimeters wide. How tall is the bar for 10 up to 20?

   7
9. 9.

   Kira grouped a basketball team's points in eleven games into bars 10 points wide (the mascot cheered at every basket). How tall is the bar for 30 up to 40?

   5
10. 10.

    Twelve runners' lap times, to the nearest second, are grouped in bars 10 seconds wide, and Luz reads the histogram. How tall is the bar for 40 up to 50?

    6