Examlex
When two independent random samples of sizes and
have been selected from populations with means
and
and variances
and
, the standard error of the sampling distribution of
the difference between the two sample means, is found by taking the square root of the sum of the two population variances; namely,
.
Averages
A mathematical concept denoting the central or typical value in a set of data, calculated in various ways such as mean, median, and mode.
Acceptance Sampling
A method of measuring random samples of lots or batches of products against predetermined standards.
Assignable Variation
Variation in a production process that can be traced to specific causes.
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