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Leah is surprised to receive a second notice regarding her electric bill.She is sure that she mailed in the check.As a matter of fact,she can see herself writing out the check and mailing it.However,when she goes through her duplicate checks,she cannot find a copy of the check to the electric company.In this example,Leah
Significant Difference
A statistical measure indicating that the observed difference between two datasets is likely not due to random chance.
Confidence Interval
An assortment of values, coming from statistical review of samples, aiming to envelop the value of an unspecified population parameter.
Margin Of Error
An expression of the amount of random sampling error in a survey's results, which indicates the range within which the true value lies with a certain degree of confidence.
Sample Standard Deviations
A measure of variability or dispersion within a sample dataset, estimating how much individual measurements in the sample differ from the sample mean.
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