Examlex
Which of these is not one of the BRIC countries?
Margin of error
An expression of the amount of random sampling error in a survey's results. It represents the range within which the true value lies, based on a certain confidence level.
Sample mean
The average of a set of data points or observations taken from a larger population.
Checkout times
The duration or period it takes for a customer to complete a purchase transaction from start to finish.
Confidence interval
A range of values, derived from sample data, that is believed to contain the true value of a population parameter with a certain probability.
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