Probabilitas Dan Statistika Ebook Download

1. Probabilitas Dan Statistika

PowerPoint Presentation: l GOALS List the characteristics of the normal probability distribution. Define and calculate z values. Determine the probability an observation will lie between two points using the standard normal distribution. Determine the probability an observation will be above or below a given value using the standard normal distribution.

Probabilitas Dan Statistika

Compare two or more observations that are on different probability distributions. Use the normal distribution to approximate the binomial probability distribution.

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Chapter Seven The Normal Probability Distribution. Characteristics of a Normal Probability Distribution: Characteristics of a Normal Probability Distribution The normal curve is bell-shaped and has a single peak at the exact center of the distribution.

The arithmetic mean, median, and mode of the distribution are equal and located at the peak. Thus half the area under the curve is above the mean and half is below it.

The normal probability distribution is unimodal=only one mode. It is completely described by Mean & Standard Deviation The normal probability distribution is asymptotic. That is the curve gets closer and closer to the X -axis but never actually touches it. Continuity Correction Factor: Continuity Correction Factor The value 0.5 subtracted or added, depending on the problem, to a selected value when a binomial probability distribution (a discrete probability distribution) is being approximated by a continuous probability distribution (the normal distribution). Four cases may arise: For the P at least X occur, use the area above (X – 0,5) For the P that more than X occur, use the area above (X + 0,5) For the P that X or fewer occur, use the area below (X + 0,5) For the P that fewer than X occur, use the area below (X – 0,5).