The Advantage of Squaring the Deviation of Each Score from the Mean

question 62

Multiple Choice

The advantage of squaring the deviation of each score from the mean and then summing is that

• A)it makes the sample variance an unbiased estimator of the population variance
• B)it makes the degrees of freedom for sample variance equal to n - 1
• C)it produces a minimal positive solution that is not zero,so long as all scores are not exactly the same value
• D)both A and C

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Definitions:

Ebola Outbreak

The occurrence of cases of Ebola Virus Disease, a severe and often fatal illness in humans, in a specific area or population.

West Africa

A region of Africa that includes countries along the Atlantic coast and some inland areas, known for its diverse cultures, histories, and economies.

Sierra Leone

A country on the southwest coast of West Africa, known for its rich history and natural resources but also for its challenges including civil war and health crises.

Ebola Cases

Instances of individuals diagnosed with Ebola virus disease, a severe and often deadly illness.