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Fundamental Statistics 2E s2-1
Michael Sullivan's Fundamentals of Statistics 2nd Edition Section2-1 (Created by A_V for Math154@SouthCentral)
8
Mathematics
Undergraduate 1
01/26/2008

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Term
Raw data
Definition
Raw data is data obtained from sources before it is organized into a meaningful form.
Term
Frequency distribution
Definition
A frequency distribution lists each category of data and the number of occurrences for each category of data.
Term
Relative frequency
Definition
Relative Frequency is the proportion (or percent) of observations within a category and is found using the formula RelativeFrequency = Frequency / SumOfAllFrequencies
Term
Relative Frequency Distribution
Definition
A relative frequency distribution lists each category of data together with the relative frequency.
Term
Bar graph
Definition

A bar graph is constructed by labelling each category of data on a horizontal axis and the frequency or relative frequency of the category on the vertical axis. Rectangles of equal width are drawn for each category. The height of each rectangle is the category's frequency or relative frequency.

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Term
Pareto chart
Definition

A pareto chart is a bar graph whose bars are drawn in decreasing order of frequency or relative frequency.

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Term
Side-by-side bar graph
Definition

A side by side bar graph is a bar graph that contains a 2nd series of data. This has the 2nd series placed right next to the bars of the first series.

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Term
Pie chart
Definition

A pie chart is a circle divided into sectors. Each sector represents a category of data. The area of each sector is proportional to the frequency of the category. *Pie charts can only be created if all the categories of the variable under consideration are represented.*

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