Under Which of the Following Conditions Can the Population Mean

question 67

Multiple Choice

Under which of the following conditions can the population mean be estimated without error employing a stratified sample?

• A) When the population is partitioned so that the number of elements in each stratum is proportional to size of the sample to be taken from each stratum.
• B) When the population is partitioned so that the elements in each stratum are equal.
• C) When the population is partitioned in such a way that the variances within strata are equal.
• D) When the population is partitioned so that the elements in each stratum are normally distributed.
• E) None of the above.

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