Examlex
Cluster (or area)sampling is a type of random sampling technique.
Random Variable
A random variable is a variable whose values depend on outcomes of a random phenomenon.
Standard Normal Probability Distribution
A probability distribution that has a mean of 0 and a standard deviation of 1, used in statistics to represent standardized values of a dataset.
Z-statistic
A statistical measure that represents the number of standard deviations a data point is from the mean of a data set.
Probabilities
Measuring how likely it is for an event to occur, using a numeric scale that falls between 0 and 1.
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