Which Has the Effect of Reducing Variance

question 56

Multiple Choice

Which has the effect of reducing variance?

• A)​random assignment
• B)​matched assignment
• C)holding variables constant
• D)​random selection

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Definitions:

Telephone Calls

Voice communications between two or more parties over a distance, conducted via telephony technology.

Probability

A numerical assessment, ranging from 0 to 1, representing how probable an event is to happen, with 0 being impossible and 1 being certain.

Poisson Distribution

A probability distribution that models the number of times an event occurs in a fixed interval of time or space when these events occur with a known constant mean rate and independently of the time since the last event.

Nuclear Power Plant

A facility that uses nuclear reactions to generate heat, which is then used to produce electricity.