A Disk Input/output (I/O)operation Is a Much Slower Process Than

question 38

True/False

A disk input/output (I/O)operation is a much slower process than accessing information stored in main memory, sometimes by as much as three or four orders of magnitude._________________________

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Definitions:

Expected Rate of Return

The anticipated amount of profit or loss an investment generates, expressed as a percentage of the initial investment amount.

Covariance

A measure of the degree to which returns on two risky assets move in tandem. A positive covariance means that asset returns move together. A negative covariance means they vary inversely.

Variance

A measure of the dispersion of a random variable. Equals the expected value of the squared deviation from the mean.