BIOL 1108 1st Edition Lecture 6Outline of Last Lecture I. Measures of Shape and Normal DistributionII. ShapeIII. Empirical Rule IV. Central Limit Theorem Outline of Current Lecture I. Normal DistributionII. Z DistributionIII. Percentile Current LectureI. Normal Distribution - Mean in the middle (symmetrical) - 68% of values fall within 1 SD - 95% of all values fall within 2 SD- 99.7% of all values fall within 3 SD- Most data comes within 3 SD from the mean II. Z Distribution- Mean: becomes a z-score of zero - Z= SD value on bell curve - Z= X- Mean/ SD- How many SD a value is from the mean (z-score)i. (score- mean)/SD III. Percentile- Look at z table and find z-score - Z score (+/-) 50% = percentile - Ex. SD= 750 and Mean= 4300i. Probability is more than 5000?1. Z= (5000-43000)/750= 0.93These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.2. Z-score= 0.32383. 50% - 32.38%=
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