STA 2014C Study Guide - Final Guide: Standard Deviation, Random Variable, Standard Score
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The number of multiple choice questions students miss on an exam. The time it took students to finish the multiple-choice question on the first exam. Continuous data (4. 1: a random variable is discrete when it has a finite or countable number of possible outcomes that can be listed, a random variable is continuous when it has an uncountable number of possible outcomes. Statistic vs. parameter (1. 1: statistic numerical description of a sample characteristic, parameter numerical description of a population characteristic. The __ percentile tells you about __% of the data fall at or below this number. Distribution shapes (2. 3: uniform, bell-shaped, skewed left, skewed right. Z-score concept (2. 5: the z-score, or standard score, represents the number of standard deviations a data value is from the mean, always round z-scores to 2 decimals. If the z-s(cid:272)o(cid:396)e is positi(cid:448)e the(cid:374) the (cid:454) (cid:448)alue is a(cid:271)o(cid:448)e the (cid:373)ea(cid:374) If the z-s(cid:272)o(cid:396)e is (cid:374)egati(cid:448)e the(cid:374) the (cid:454) (cid:448)alue is (cid:271)elo(cid:449) the (cid:373)ea(cid:374)
