Stats 151 - Representation of Continuous Random Data

Question	Answer
what is important to know about the x values for continuous random data?	they can be infinity with no definite end being defined as P( -infinity, infinity)
how is continuous random data represented?	a probability density curve which is a smooth curve over the relative frequency.
how the events represented?	as the intervals on the x axis
what are the events?	the area under the curve, over the intervals
the x values for a density curve must always be ___?	greater then or equal to zero
what is another name for a bell curve?	a normal curve
u is the? sigma is the ?	u is the mean, sigma is the spread of the graph
68% of the graph?	falls within 1 standard deviation of the mean
95% of the data?	falls withing two standard deviations of the mean?
99.7% of the data?	falls within three standard deviations of the mean
how do you define the probability of one standard deviation? 2?	- P(u-sigma < or equal to X < or equal to u+sigma) = 0.68 - P(u-2sigma < or equal to X < or equal to u+2sigma) = 0.95

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	Created by jennabarnes12387 almost 11 years ago