Which of the Statements Below Are TRUE Regarding the Mean

question 18

Multiple Choice

Which of the statements below are TRUE regarding the mean and standard deviation?
I As the number of measurements increases,approaches  if there is no random error.
II The square of the standard deviation is the average deviation.
III The mean is the center of the Gaussian distribution.
IV The standard deviation measures the width of the Gaussian distribution.

• A)II,III,and IV
• B)I,III,and IV
• C)I and II
• D)I,II,and IV
• E)III and IV

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Definitions:

Impedance

The total resistance to the flow of alternating current (AC), considering both the real resistance and reactive resistance (reactance) in a circuit.

PI Filters

Electronic filters used to reduce noise and suppress ripple in power supplies by combining the filtering properties of inductors and capacitors.

T Filters

A type of electronic filter design that uses a configuration resembling the letter T, commonly used for separating different frequencies.

Filter Circuit

An electronic circuit used to remove unwanted components of a signal, such as noise, or to extract useful parts of the signal, like certain frequencies.