Histograms, and which graph fits the data

Answer Key - Grade 7 Math Worksheet

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

1. 1.

   Kira sorts seconds of jump rope without a miss for students into a stem-and-leaf plot (the rope hummed). How many students jumped for 40 seconds or more?

   10
2. 2.

   Luz sorts words written in a minute for writers into a stem-and-leaf plot (the paper rustled). How many writers wrote 20 words or more?

   11
3. 3.

   Milo sorts seconds to solve a puzzle for students into a stem-and-leaf plot (one piece hid under the couch). How many students needed 60 seconds or more?

   7
4. 4.

   Noah draws the histogram of minutes of reading (the book club met). Now the bars are made 10 wide. How tall is the new bar from 0 up to 10?

   13
5. 5.

   Zee sorts minutes of piano practice for students into a stem-and-leaf plot (the piano stayed in tune). What is the median?

   29
6. 6.

   Ari sorts minutes of reading in a night for students into a stem-and-leaf plot (the lamp stayed on). What is the median?

   44
7. 7.

   Esme compares two classes' test scores and wants the median and the spread of each class at a glance. Which graph fits?

   • A box plot, because it shows the median and the spread.
   • A bar graph, because it uses bars to show counts.
   • A dot plot, because it shows every value on a number line.
   • A histogram, because it groups the values into bars.
8. 8.

   Jun has 24 heights in inches and wants to keep every value but group them by tens. Which graph fits?

   • A histogram, because it groups the values into bars.
   • A stem-and-leaf plot, because it keeps every value and groups them by tens.
   • A box plot, because it shows the median and the spread of the heights, grouped by tens
   • A bar graph, because it uses bars to show counts.
9. 9.

   Luz wants to know how many of 80 riders rode 5 to 10 miles, how many 10 to 15, and so on. Which graph fits?

   • A bar graph, because it uses bars to show counts.
   • A dot plot, because it shows every value, so the counts are easy to read
   • A box plot, because it shows the median and the spread.
   • A histogram, because it groups many values into bars to show the shape.
10. 10.

    Milo measured how high 12 balloons floated and wants to see each height and which are close together. Which graph fits?

    • A histogram, because it groups the values into bars.
    • A bar graph, because it uses bars to show counts.
    • A box plot, because it shows the median and the spread of the heights
    • A dot plot, because it shows every value on a number line.