STT 201 Lecture Notes - Lecture 51: Frequency Distribution, Frequency (Statistics), Histogram
19 Jul 2019
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Document Summary
Has a single peak, tapers odd at either end; and is approximately symmetric. Distribution has tow peaks of about the same height. Used for data that can be placed into specific categories, such as nominal or ordinal level data. Used to separate the classes so that there are no gaps in the frequency distribution. Found by subtracting the lower class limit one from the lower class limit of the next class; can also be used with upper limits. Each raw data value is placed into a quantitative or qualitative category. The organization of raw data in table form; consists of classes and frequencies. Graph that displays the data by using lines that connect points plotted for the frequencies at the midpoints of the classes. The number of data values contained in a specific class. When the data is large and the data must be grouped into classes that are more than one unit in width.
