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Lecture 3 Terms
Terms in this set (15)
Fisherian (Frequentist) Statistics
Frequentist statistics provides a generally applicable scheme for making statistical inference.
Based on estimating probability of the data, if the null hypothesis is, in fact, true.
It implies drawing conclusions about population parameters, using the estimate derived from a (statistical) sample.
Define Statistical Population of Interest
Sample Randomly from that Population
Relative occurrence of a particular result, from a given number of trials - in a finite sample
the universe of all possible events
Composites of simple events in the same space
Carefully consider the matches / mis-matches between the "biological population" and the "statistical sample"
Sampling and probability estimation require determining the sample space and the independence of events
Simultaneous occurrence of multiple simple events in the same space
Two events, A and B, are independent if the fact that A occurs does not affect the probability of B occurring.
Mid-point of the distribution (50%)
Note: All distributions have only one median
Distributions characterized using certain percentages of observations (e.g., 25%, 50%, 75%)
Measure of the symmetry of a distribution.
the mean is larger than the median, skewness > 0
the mean is smaller than the median, skewness < 0
Measure of the degree to which observations cluster in the tails or the center of the distribution.
Less values in tails and more values close to mean. Leptokurtic.
More values in tails and less values close to mean. Platykurtic.
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