Examlex
What is responsible for maintaining an index of files and folders on a hard drive to speed up Windows searches?
Proportion
A statistical measure that reflects the fraction of the total number of occurrences for a specific outcome.
Hypotheses
Formally proposed explanations for a phenomenon, which are typically tested through research and experiments to be supported or refuted.
Z Statistic
The Z statistic, or Z-score, is used in hypothesis testing, measuring the number of standard deviations a datapoint is from the population mean.
P-value
A measure in statistical hypothesis testing representing the probability of obtaining a result at least as extreme as the one observed, under the assumption that the null hypothesis is true.
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