K e y t o p i c s organizing field collections

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K E Y T O P I C S Organizing field collections Morphometrics Calculating the average, median, mode, variance, and standard deviation T I M E F R A M E 1 hour, 45 minutes C L A S S O U T L I N E T I M E 10 minutes 20 minutes 45 minutes 10 minutes 20 minutes T O P I C Organizing field collections Lecture - Morphometrics Data collection Lecture - Basic Statistics Basic Statistics D E S C R I P T I O N Students will take out their collections and begin sorting and organizing them. Define morphometrics and explain how measurements from field collections generate data. Explain which part is important to measure, and where. Explain basic floral and leaf anatomy. Discuss how to make tables for this data. Students will begin measuring their plant specimens. Brief review of how to calculate the average, mean, mode, and standard deviation. Explain the purpose of graphs and how to design one. Students use their data sets to calculate the average, mean, median, mode, variance, and standard deviation, using calculators and lab notebooks.
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Science Research Mentoring Program STATISTICS © 2013 American Museum of Natural History. All Rights Reserved. 11 Session Three: Morphometrics and Basic Statistics (continued) M A T E R I A L S Lab notebooks Worksheets calculators 30cm rulers pens/pencils Field collections P R E P A R A T I O N None required P R O C E D U R E 1. Have students organize their field collections. Ask them to define morphometrics. Use their answers to discuss what types of measurements may support or reject their hypothesis. Discuss how they will standardize their measurements. For example, will one person take all the measurements or both? How might that affect the data? Discuss how they will organize their data. 2. Students will measure their field specimens. Once all measurements are completed, discuss basic statistics. Why are statistics important to a biologist? Briefly review how to calculate the mean, mode, median, variance and standard deviation. Discuss what are graphs used for and why they’re important. 3. Students will use calculators and the worksheet to calculate the average, mean, mode, and standard deviation. They will do this to understand the equation behind the statistic. 4. Students will draw graphs to visualize their data, and discuss in pairs whether the graph enhances their understanding and/or aids in answering their question.
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Science Research Mentoring Program STATISTICS © 2013 American Museum of Natural History. All Rights Reserved. 12 Session Three: Morphometrics and Basic Statistics: WORKSHEET Mophometrics and Basic Statistics I N T R O D U C T I O N Returning to the laboratory is often a very exciting time, as scientists begin to sort through and organize their collections. This is where we’ll start too! Remember you had a question, and now you have to support it with data.
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