Why Is It Important to Divide by Df to Compute

question 54

Multiple Choice

Why is it important to divide by df to compute sample variance?

• A)doing so makes the sample variance an unbiased estimator of the population variance
• B)doing so ensures that the value for sample variance varies between 0 and 1
• C)doing so minimizes the likelihood that the sample variance will be a negative value
• D)it is not important;dividing by df is optional

---

Definitions:

Cardiovascular System

The network of organs and vessels through which blood flows, carrying oxygen and nutrients to the body's cells, and removing waste products.

Respiratory System

The biological system consisting of specific organs and structures used for gas exchange in animals and plants.

Urinary System

The organ system responsible for creating, storing, and eliminating urine.

Spleen

An organ located under the ribcage and above the stomach in the left upper quadrant of the abdomen that acts as a blood filter in the immune system.