COMM-1057EL Chapter Notes - Chapter 8: Standard Deviation, American Contract Bridge League, Statistical Inference
26 Oct 2017
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A continuous random variable is quite different from a discrete variable and it is treated differently We cannot list the possible values because there is an infinite number of them. Because there is an infinite number of values, the probability of each individual value is virtually 0. Consequently, we can determine the probability of only a range of values. In previous chapters, we completed histograms and the relative frequencies of intervals were found using the relative frequency approach, we estimate the probability of intervals. Example (pt. 1): we estimate that the probability that a randomly selected (in this case, acbl member) will be between 10 and 20 years of age is 6/200 = 0. 030. We can similarly estimate the probabilities of the other intervals in the histogram. To proceed, we set the values along the vertical axis so that the area in all the rectangles together adds to 1 .
