using basic measures see person text for good discussion on this material
{"Image DocumentName": "Using Basic Measures See Kan text for good discussion on this material", "Image ImageDescription": "Ratios are useful to compare magnitudes. Proportions (fractions, decimals, percentages) are useful when discussing parts of a whole. Such as a pie chart. When number of cases is small, percentages are often less meaningful \u2013 Actual numbers may carry more information. Because percentages can shift so dramatically with single instances (high impact of randomness) When using rates, better if denominator is relevant to opportunity of occurrence of event. Requirements changes per month, or per project, or per page of requirements more meaningful than per staff member.", "Image XResolution": "200", "Image YResolution": "200", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}