Psy 202, Chapter 2 Notes
Psy 202, Chapter 2 Notes Psy 202
Popular in Elementary Statistics
Popular in Psychology (PSYC)
This 2 page Class Notes was uploaded by T'Keyah Jones on Friday August 26, 2016. The Class Notes belongs to Psy 202 at University of Mississippi taught by Dr. Melinda Redding in Fall 2016. Since its upload, it has received 17 views. For similar materials see Elementary Statistics in Psychology (PSYC) at University of Mississippi.
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Date Created: 08/26/16
Chapter 2: Frequency Distribution and Graphs Vocabulary Ungrouped frequency distribution Simple frequency distribution 2 columns f Frequency How many Grouped frequency distribution Create groups How many intervals are used Intervals have to be same width Zero can be a frequency i.e. (Grade scale) Discrete v. Continuous Numbers Discrete Take whole number values only Never fractional Nominal and ordinal variables are always discrete Interval and ratio variables may be discrete or continuous Continuous Take on infinite values between whole number (fractional) Have real limits Interval and ratio variables may be discrete or continuous Real limit Midpoint on a scale Graphing Data Discrete Continuous Pie chart Histogram Bar graph Frequency polygon Xaxi Yaxis Score Frequency Shapes of Frequency Distribution Modality How many high points there are Skewness The distribution is symmetrical The distribution is skewed to the left (negative) The distribution is skewed to the right (positive) Kurtosis How peaked (leptokurtic) or how flat (platykurtic) the distribution is Mesokurtic Normal curve Bell shaped common 2
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