Statistical Sciences 2244A/B Chapter Notes - Chapter 9-10: Random Variable, Standard Deviation, Sample Space
30 Sep 2016
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But has a regular and predictable pattern in the long run. Based on a long series of repetition of the random act. If 2 events are disjoint, their sum is the probability that one of the events will occur. Sample space is made of a list of individual outcomes. Use a density curve to model the outcomes. Area under the curve and on or above the horizontal axis, within the specified range is the probability of that particular outcome occurring. Assigns probability to intervals rather than an individual outcome (an individual outcome has a probability of 0) Standard deviation of a density curve ( ) A variable whose value is a numerical outcome of a random phenomenon. A probability distribution of a random variable shows what values it can take and assigns probabilities to those values. Express an individual"s opinion of how likely an outcome is. Outcome of one event does not influence the other.
