05 - Lab - Thur - Descriptive Statistics Lab New.pdf

Sometimes the matching species is another heliconius

• Lab Report
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where their color pattern matches that of a different species. Sometimes the matching species is another Heliconius species, but sometimes it is a different genus entirely. In some cases, the butterfly is harmless but is mimicking a toxic species. In other cases, both species are toxic and reinforce avoidance behavior in their predators. Toxic species acquire chemical compounds from the plants they eat and store them in their wings. The wings are brightly colored red as a warning sign to predators.

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Methods: Analyze the given images of butterflies collected from Surinam and Guyana. 1. Use a ruler and measure the butterflies to the nearest millimeter (mm) a) measure at the widest part of the wing from tip to tip Results/calculations: 1. Calculate the Mean, Median, Mode, Mininum, and Maximun for both locations Microsoft Excel: Create two columns: “Surinam” and “Guyana” Enter the data for each location under the proper column Mean: Type “=average(select data)” Median: Type “=median(select data)” Mode: Type “=mode(select data)” Mininum: Type “=min(select data)” Maximun: Type “=max(select data)” 2. Calculate the Standard Deviation and Sample Size for both locations Microsoft Excel: Standard deviation: “=stdev(select data)” Sample size: “=count(select data)” 3. Use the data to draw Frequency Histograms for both locations.
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