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Direct linkMeiko Lin; Erin Bumgarner; Madhabi Chatterji – Quality Assurance in Education: An International Perspective, 2014
Purpose: This policy brief, the third in the AERI-NEPC eBrief series "Understanding validity issues around the world", discusses validity issues surrounding International Large Scale Assessment (ILSA) programs. ILSA programs, such as the well-known Programme of International Student Assessment (PISA) and the Trends in International…
Descriptors: Achievement Tests, Foreign Countries, International Assessment, Elementary Secondary Education
Feldman, Roger – Social Indicators Research, 2013
The use of "radar charts" is an increasingly popular way to present spatial data in a visually interesting format. Some authors recommend using "filled radar charts" to compare the performance of observational units. Filled radar charts are not appropriate for such comparisons because the size of the area within the polygon is not invariant to the…
Descriptors: Charts, Social Indicators, Observation, Misconceptions
