Define each performance indicator carefully. Be precise about all technical elements of the indicator statement. Include in the definition the unit of measurement. Provide enough detail to ensure that different people at different times, given the task of collecting data for a given indicator, will collect identical types of data. Consider an indicator for the value of exports.
Data source Identify the data source for each performance indicator.
Be as specific about the source as possible, so that the same source can be used routinely. This will ensure consistency and avoid misinterpretations. It can lead to false impressions of change. Method of data collection Specify the method or approach to data collection for each indicator. Provide sufficient detail on the data collection or calculation method to enable it to be replicated in the future.