# Rate of Change

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## Rate of Change

In technical analysis, a measure of how fast the price of a security changes over time, expressed as a fraction or decimal. It is calculated as follows:

Rate of change = (closing price today - closing price X days ago) / closing price X days ago
References in periodicals archive ?
The month-over-month rate of change in housing permits has grown for four straight months.
How to cope with that rate of change is a challenge for educators -- for administrators as well as those actually in the classrooms.
The annual rate of change - which compares the current level of house prices against their level 12 months ago - declined from +3.
The European light trucks market generated total revenues of \$31 billion in 2009, representing a compound annual rate of change (CARC) of -9.
If the temperature control system has rate of change limits properly set, cool-down is simple, since all the operator must do is lower the temperature set points to ambient and then 60 to 90 minutes later return to turn off the TCU.
From a very short period of time, you can't extrapolate the rate of change of a very slow process," he says.
Elliott suggests that the information era will require new methods of accounting that measure not just the change in wealth, but the rate of change in wealth.
This relationship can be expressed in an equation: (1)([the rate of change of Q] / Q) - ([the rate of change of L] / L) = [the rate of change of A] / A + S.
Fifth, I use rate of change curves to more easily see the cyclical fluctuations and correlations between the two data series.
9 million in 2010, representing a compound annual rate of change (CARC) of -2.

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