Record and Analyze Data 4-1. Warm Up a. What is the measurement of the shortest plant? b. How many plants measure 2 1/2 inches? c. What is the measurement.

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Presentation transcript:

Record and Analyze Data 4-1

Warm Up a. What is the measurement of the shortest plant? b. How many plants measure 2 1/2 inches? c. What is the measurement of the tallest plant? d. What is the difference between the longest and shortest measurements?

Lesson

Directions 1.Cut the strip of paper so that it is the same length as your pencil. 2.Estimate the length of your pencil strip to the nearest inch and record your estimate on the first line in your Problem Set. 3.Use your ruler to measure your strip to the nearest half inch. Record your measurement by placing an X on the picture of the ruler in Problem 2 on your Problem Set.

Our Data Which pencil measurement is the most common, or frequent, in our class? Are all of the pencils used for these measurements exactly the same length?

Our Data

Debrief

Questions to Think About Which line plot contains the most accurate measurements? Why? Why are smaller units generally more accurate? Are smaller units always the better choice when measuring? If you wanted a more precise measurement of your pencil’s length, what could you do? How does the most frequent pencil length change with each line plot? How does the number of each pencil length for each data point change with each line plot? Which line plot had the most repeated lengths? Which had the fewest repeated lengths?