Examlex
A population with 200 elements has a variance of 20.From this information,it can be shown that the population standard deviation is 10.
Sample Mean
The average of a set of numerical values taken from a subset (sample) of a larger population.
Probability
A measure of the likelihood of a particular event's occurrence, ranging from 0 (impossible) to 1 (certain).
P < 0.05
Indicates that the probability of the observed data, or more extreme, occurring by chance is less than 5%, commonly used to determine statistical significance in hypothesis testing.
Population Standard Deviation
The square root of the variance in the full population, indicating how much each member of this population deviates from the population mean.
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