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. Read this first

   Dot plot

   Shoe sizes. Number line from 3 to 9, a tick at every 1. Each dot is one student. Dots above each tick: 3: ●; 4: ● ●; 5: ● ● ● ● ●; 6: ● ● ● ● ● ● ● ●; 7: ● ● ● ● ● ●; 8: ● ● ●; 9: ●.

3. 2.

   A class recorded its shoe sizes, and Milo made a dot plot (one sneaker had sparkly laces). Which shoe size is the most common?

   6
4. 3.

   Students measured leaves to the nearest centimeter, and Noah plotted the lengths (no leaf asked to be measured). Which length in centimeters is the most common?

   7
5. 4.

   Students timed how long they take to walk to school, and Pia made a histogram. How many students are in the data set?

   27
6. 5.

   Students counted the pages they read last week, and Ren drew the histogram. How many students are in the data set?

   22
7. 6.

   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
8. 7.

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

   14
9. 8.

   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
10. 9.

    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
11. 10.

    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