1. Identify key information sources
{"Image DocumentName": "1. Identify key information sources", "Image ImageDescription": "Randomisation is a sampling technique characterised as having no predetermined pattern or plan for selecting sample data.  Systematic sampling is a technique that attempts to reduce the variance of the estimates by spreading out the sampling. One example would be choosing documents or records by formula which avoids very high or low estimates.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}