The table below shows estimated future cost-of-living adjustments (COLAs) and estimated future percentage increases in the national average wage index (AWI). These estimates are derived from the intermediate assumptions in the 2015 Trustees Report.he table below shows estimated future cost-of-living adjustments (COLAs) and estimated future percentage increases in the national average wage index (AWI). These estimates are derived from the intermediate assumptions in the 2015 Trustees Report.
Item Analysis. Item Analysis is an important (probably the most important) tool to increase test effectiveness. Each items contribution is analyzed and assessed. To write effective items, it is necessary to examine whether they are measuring the fact, idea, or concept for which they were intended.
Factor Analysis. Exploratory factor analysis is a statistical approach that can be used to analyze interrelationships among a large number of variables and to explain these variables in terms of a smaller number of common underlying dimensions.actor analysis is based on a correlation table. If there are k items in the study (e.g. k questions in the above example) then the correlation table has k Ã k entries of form rij where each rij is the correlation coefficient between item i and item j.