Wicomico County Mathematics Content Standards Gather relevant data and compare data sets to answer a question Organize and display data using stem and leaf diagrams Analyze and interpret stem- and-leaf diagrams

Warm-Up Show this data on a stem-and-leaf diagram Time Spent on Carving Pumpkins

Math Journal Write instructions for a fifth grader to follow to make a stem-and-leaf diagram.

Make a stem-and-leaf diagram to show the data on ghost presidents.

President Age Casper 57 Carrigan 61 Harvey 57 Stretch 57 Fatso 58 Stinky 57 Dransfield 61 Arp 54 Yotta 68 Yada 51 Ziggy 49 Pixo 64 Zatso 50 Trapezo 48 Wildbrain 65 Zilch 52 Sworl 56 Beenz 46 Flooz 54 Abracat 49

Scoring Rubric for the Stem-and-Leaf Diagram 2 POINTS All information is accurately included. Plot is titled. The plot is neat, well-organized, and attractive. Leaves are ordered from smallest to largest. Stems and leaves are accurately displayed. 1 POINT At least 3 of the above criteria have been met. O POINTS Less than 3 of the above criteria have been met.

What conclusions can you draw from your diagram?

Would a line plot be a sensible way to show this data? Explain

How are line plots and stem- and-leaf diagrams alike? How are they different?

The back-to-back stem-and-leaf diagram shows the average daily October temperatures for Spooky City and Candy Corn Village. Use the plot to compare the pattern of October temperatures in the two cities.

Spooky CityCandy Corn Village

What do the digits in the stem represent? Which leaves, on the right or the left, show temperatures for each city? Spooky City ___Candy Corn Village ___

The lowest temperature for Spooky City was ___. The highest temperature was ___. For Candy Corn Village, the lowest temperature was ___ and the highest temperature was ___.

How many more days was the temperature in the 60’s and 70’s in Candy Corn Village than in Spooky City?

Writing About Math Write 2 or 3 sentences comparing the temperature patterns for the two cities.

How can you compare the pattern without comparing the actual temperatures?

Homework Write a paragraph or more about stem and leaf diagrams and line plots. Use the notes that you took in class today.