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What happens when…

What happens when…. you eat spicy foods?. The “Scientific Method” and Experimental Design. Observations Hypothesis Testing & Experimental Design Educated Guess Variables/Measures (Independent, Dependent) Experimental Groups Data Analysis & Interpretation Graphing Statistics Conclusions

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What happens when…

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  1. What happens when… • you eat spicy foods?

  2. The “Scientific Method” and Experimental Design • Observations • Hypothesis Testing & Experimental Design • Educated Guess • Variables/Measures (Independent, Dependent) • Experimental Groups • Data Analysis & Interpretation • Graphing • Statistics • Conclusions • Future Experiments

  3. Hot Salsa Experiment

  4. Hot Salsa Experiment Mean =

  5. Statistical Analysis • Student’ t-test for the comparison of two means: t = Y2 – Y1 / σY2-Y1 = mean(group1)-mean(group2) standard error for both groups dƒ = n1+n2-2 σY2-Y1 = √∑(Y1i-Y1)2 + ∑(Y2i-Y2)2/n1+n2-2 Consult table to determine p value. If p < 0.05, then reject H0. Hot Salsa Experiment

  6. Take-Home Points • Experiments do not prove anything. • “Negative” results are valuable. • Sample size affects experimental outcome. • Controls are necessary. • Statistics aid data interpretation. Hot Salsa Experiment

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