Return on investment

ROI (Return on Investment) is the ratio of the benefits (in terms of money) resulting from an investment made to the value (expressed in money) of the investment. In developmental activities ROI is sometimes used to measure the effectiveness of the training process, as the Level 4 measurement by the Kirkpatrick methodology or as the additional level 5 focusing on the financial analysis of investment into training (i.e. 5 Level according to the Philips methodology).

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