 |  Statistics for the Behavioral Sciences, 4/e Michael Thorne,
Mississippi State University -- Mississippi State
Martin Giesen,
Mississippi State University -- Mississippi State
The Frequency Distribution
Symbols and FormulasSYMBOLS | Symbol | Stands For |
| | X | a score | | f | frequency of a score | | N | sum of the frequencies, or total sample size | | | Cum f | cumulative frequency |
FORMULAS Formula 3-1. Equation to convert frequencies into percentages <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif:: ::/sites/dl/free/0072832517/55312/c3_f1.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> f is the frequency or the number of times each score occurs; N is the number of observations or the sum of the frequency column in a frequency distribution.Formula 3-2. Equation to convert cumulative frequencies to cumulative percentages <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif:: ::/sites/dl/free/0072832517/55312/c3_f2.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]>
Cum f stands for the cumulative frequency, which is the total number of observations up to and including the observations in the interval you're considering. |
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