I a Random Variable May Be Either Discrete or Continuous

question 100

Multiple Choice

i. A random variable may be either discrete or continuous. ii. If Unique Buying Services has 100 employees, there might be 0, 1, 2, 3 up to 100 employees absent on Monday. In this case, the day of the week is the random variable.
iii. A discrete variable may assume fractional or decimal values, but they must have distance between them.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) is a correct statement but not (ii) or (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Voltages

The potential difference in charge between two points in an electrical field, measured in volts.

Motors

Devices that convert electrical energy into mechanical energy.

Squirrel-Cage Rotor

A type of rotor in an induction motor, characterized by its cylindrical shape with conductive bars running the length of the cylinder and connected at both ends by conductive rings, creating a cage-like appearance.

Frequency

The number of cycles (of a repeating event) per unit time, measured in hertz (Hz) in the context of waves or electrical signals.