Term
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Definition
| Shows the # of times the possible values for a variable occur in a data set. They can be displayed in tables or diagrams (bar graph, histograms, frequency pologon) to give an overview of the data and reveal trends in data. |
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Term
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Definition
| The number of values of a variable in a data set that falls within a given category or interval (I.E. 5-X, 2-Y, 7-Z). |
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Term
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Definition
| The # of values of a variable in a data set that fall within a catagory/interval, divided by the total number of values in data set, only for quantitive variables (I.E. 7-X, out of 33 total, 7/33 or 21%) |
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Term
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Definition
| The sum of all frequencies up to a certain value of the variable, applying only to quantitive variables ( 2-X, 4-Y cumulative frequency = 6). |
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Term
| Relative Cumulative Frequency |
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Definition
| The sum of all relative frequencies up to a certian value of the variable (I.E. 1-X, 2-Y, 3-Z, out of 33, r.c.frequency = 6/33 or 18%). |
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Term
| Qualitive Variables: Name the columns of a frequency table |
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Definition
| Category, Tall, Frequency, and Relative Frequency. |
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Term
| Qualitive Variables: What type of graph is used for these variables? |
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Definition
| A bar graph, with small spaces seperating the bars. Catagories fall on the X-axis, and frequency or relative frequency on the Y-axis. |
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Term
| Quantitive Variables: In a frequency table, what are the columns? |
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Definition
| Categoy, Tally, Frequency, Cumulative Frequency, Relative Cumulative Frequency. |
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Term
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Definition
| Quantitive variables with a large range of possible values are grouped into the values of class intervals. Continuous variables are more likely to be used in this way, while discrete can be grouped into class intervals or not. |
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Term
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Definition
| A frequency diagram for quantitive variables with no spaces between the bars. It has the categories on the X-axis, and Freq., R.Freq., C.Freq., or R.C.Freq. on the Y-axis. |
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