Lec01 - Scientific Method Make observations Form a...

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Scientific Method Make observations Form a hypothesis Make predictions Test the hypothesis Rinse and repeat Shoals Marine Laboratory
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Science and Life in General Observation Analysis Understanding Judgment Action
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Uncertainty Will it rain tomorrow? Will Ichiro Suzuki get a hit at his next  at bat? Will California condors go extinct? Are PCBs a health problem in the  Hudson River? Is there enough water being left in the  Klamath River to support the fish?
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Statistical Methods Provide a logical objective structure for  addressing questions that are inherently  uncertain.
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General Topics Data  Trend and Variation Hypothesis Testing Statistical Modeling Applied Statistical Theory Computational Methods
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Splus / R A statistical computing environment
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Collecting Data Sex (M,F) Head Circumference (cm) Foot Size (cm)
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A Little Math Build on basic  statistical concepts Mean Variance Correlation Probability Build conceptual  models Make predictions
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Which of the following is a  measure of central tendency? A: Mean B: Variance C: Median D: Mode E: Interquartile range There may be more than one correct answer.
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Intercept and Slope
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Determining the slope of a line
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Leaves Data  132 points, leaf length mm leaves.txt 61 75 79 68 79 66 73 52 72 …
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The Population of Leaf Lengths
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Summary Statistics How useful are they in describing the  system? In what sense are they optimal (that is  are they the best descriptors)?
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Find theta that minimizes the  sum of squares
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Derivative with respect to  theta (slope = 0)
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Lec01 - Scientific Method Make observations Form a...

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