SOCI 311 Lecture Notes - Lecture 5: List Of The Price Is Right Pricing Games, Standard Deviation, Normal Distribution
30 Sep 2017
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Can standardize any score: score-mean/ standard deviation or xi- x with bar/ s. The probability is based on what we think what will outcome not what does occur. Can use histogram to describe the actual distribution and to describe the probability distribution, of the likelihood of outcomes. & probability, is symmetrical: example: plinko example. Standard deviation of the probability is theoretical, tells how far on average an outcome is from the mean expected to be. Special distribution called the normal distribution, describes the distribution of different sample needs. Area taken up by one standard deviation: has very specific properties: how much space in the normal curve is taken up by 1 standard deviation or more from the mean, width of the bar, 34. 13% above/below the mean. 95. 44: probability of selecting 3 standard deviation is 99. 74, 0. 05% chance of getting deviation more than 3 deviation. 4: c area beyond z, for 1 z: 0. 3413, for 2 z: 0. 4772.
