The Hourly Wages of a Sample of 130 System Analysts

question 55

Multiple Choice

The hourly wages of a sample of 130 system analysts are given below. mean = 60 range = 20
Mode = 73 variance = 324
Median = 74
The coefficient of variation equals

• A) 0.30%
• B) 30%
• C) 5.4%
• D) 54%

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Definitions:

Discriminator

An electronic circuit used to demodulate frequency-modulated signals, converting changes in frequency into amplitude variations.

Resonator

A device or system designed to oscillate with maximum amplitude at a specific frequency, often used in electronic circuits to select particular frequencies from a complex signal.

Cut-off Frequency

The frequency at which the magnitude of a signal is reduced by a specific ratio, marking the boundary between passband and stopband in a filter’s performance.

Variable Capacitors

Capacitors whose capacitance value can be adjusted or varied, often used in tuning circuits or as part of frequency modulating systems.