Normal Distribution

Chapter 5 the pattern Distribution Graph (curve) 1. The curve resembles a gong shape and the highest point is the mode, median, and look on. 2. It is symmetric. 3. Approaches x-axis at infinity 4. flection points at µ(mean) ±Ã" (sigma) 5. experimental rule (68-95-99.7) 6. Any regular airing is completely de designate by two parameters: (FIRST NUMBER TELLS CENTER, flier OF VARIABILITY) a. X~N(µ, Ã") (x= variables, ~=distributed, N=shape, µ=center, Ã"=spread) b. Y~N(10,1) A. If the second number is change magnitude it spreads the familiar dissemination gong shape and if its decreased it narrows the bell shape ****A conventionalism curve depends completely on the two parameters and because e L 2.718 and p L 3.14 argon constants.**** 7. The total area under(a)(a) the curve is 1 or light speed% 8. The area under the curve & above an legal separation is the probability of an issue in that interval 9.

The Standard Normal Distribution * A particular normal distribution Z~N(0,1) * Z Scores follow the standard normal distribution * Any normal variable may be range using the formula z=x-?? z =Value - look upon Standard deviation * try Distribution of the sample mean (pickn & average) * creation Distribution (pick one at random from the race) 1.BEST= Know the universe distribution is normal 2. pricey = n?30 Use the central limit theorem (CLT)regardless of population distribution for n?30. 3. not going to exit n<30 X~?If you want to get a profuse essay, order it on our website: OrderEssay.net
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