PSYC 2320 Study Guide - Comprehensive Final Exam Guide - Standard Deviation, Test Cricket, Normal Distribution

• School: Northeastern University
• Department: Psychology
• Course: PSYC 2320
• Professor: Robert Cole Eidson

Document Summary

Say what we think people outside the sample do. Variability exists in life, account for and explain it. Is there enough variability for something interesting to explain it. Describe data in actual observations or scores. Doesn"t actually say the times of people finishing the race just 1st, 2nd, Numbers only help to distinguish one from another. Numbers place objects in order with meaningful differences. Time 0 seconds does mean something. Give meaning/descriptors to values but still not great. How often scores occur in data (frequency) Distributions have both spread (x axis) and frequency (y axis) Measures of central tendency (mean, median, mode) Middle or typical value in a data set. Mode: most frequently occuring number in set. Can be misleading doesn"t take all scores into account dist. can have. Median the same mode but look very different. Middle value in a set number in the center or mean of 2 middle values (position. Need to arrange all data in order.