The Variance Is a Measure of Dispersion or Variability of a Random

question 86

Multiple Choice

The variance is a measure of dispersion or variability of a random variable. It is a weighted average of the

• A)square root of the deviations from the mean
• B)square root of the deviations from the median
• C)squared deviations from the median
• D)squared deviations from the mean

---

Definitions:

Axon

The long, slender projection of a nerve cell, or neuron, that conducts electrical impulses away from the neuron's cell body.

Neural Impulse

A signal transmitted along a nerve fiber, typically in response to a stimulus, leading to action or communication between different parts of the body.

Neurotransmitters

Chemical messengers that transmit signals across synapses from one neuron to another in the brain and nervous system.

Knoblike Terminals

The rounded ends of axons, known as axon terminals, which are involved in transmitting signals to other neurons or muscles through the synapse.