NUR 80A/B Study Guide - Midterm Guide: Type I And Type Ii Errors, Standard Score, Cohort Study
Document Summary
Discrete: categories are made up of units that are distinct from one another: nominal level: marital status, ordinal level: olympic medals (ranks) Continuous: variables that usually fall along a continuum and allow for fractional amounts. The degree the which subparts of an instrument measure the same characteristics. Test-retest: the extent to which scores are similar on 2 separate administrations of an instrument to the same people. Reliability coefficient (cronbach"s alpha): measure of internal consistency, that is, how closely related a set of items are as a group: higher than 0. 7 is satisfactory, range of 0. 85-0. 95 are preferable. Mode: value that occurs most frequently: best used with nominal data, can be used with ordinal, multi-modal: more than one number occurs with equal frequency. Median: represents the exact middle score: used with ordinal, interval, and ratio variables when you have extreme scores.
