SOC202H1 Lecture Notes - Lecture 3: Brining, Normal Distribution, Standard Deviation
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Interval ratio mean, median, mode mode of dispersion range, standard deviation/variance: standard normal distribution or normal curve or called gaussian distribution: The normal distribution is a theoretical distribution. Real distribution are not perfect have ridges, vary in angle etc. and idealized version of the shape is what we draw when we draw a mountain. The normal distribution is the theoretical distribution in that its an ideal case or (cid:862)like a (cid:373)odel(cid:863) The area under the curve encompasses all observations. The red area represents 1000% of the observation variable x: recap median (50th percentile) Interpretation of z-scores: tells us the position of a given score relative to the rest of the scores in a distribution: How many standard deviations above or below the mean does it lie: useful for comparing scores measured on different scales, brining the normal curve and z-score together: Z scores are a tool to answer the following:
