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19 Cards in this Set
- Front
- Back
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Point-Slope Form |
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Parallel Lines have slopes that are: |
Equal |
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Perpendicular Lines have slopes that are: |
Negative reciprocals |
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Scatter Plot |
A graph that shows the relationship between two data sets. |
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Correlation |
a relationship between data sets. |
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Positive Correlation |
As x increases, y increases. |
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Negative Correlation |
As x increases, y decreases. |
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No Correlation |
The points on the scatter plot show no pattern. |
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Line of Fit |
A line drawn on a scatter plot that is close to most of the data points. |
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Residual |
the difference of the y-value of a data point and the corresponding y-value found using the line of fit. |
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When a residual plot shows a pattern, that means that: |
it is not a good fit for the data |
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When a residual plot does not show a pattern, that means that: |
it is a good fit for the data |
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correlation coefficient |
The value that tells whether the correlation is positive or negative and how closely the equation models the data. The closer r is to 1 or -1, the stronger the correlation is. |
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Line of BEST Fit |
The most perfect line of fit that can be created for the data. You need to do this on your calculator. |
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Steps to Finding Line of Best Fit and Correlation Coefficient: |
1. Enter the data from the table into two lists (x in L1 and y in L2) 2. Turn your diagnostic on. 3. Use the linear regression feature. The values of the equation can be rounded to create the line. 4. r is the correlation coefficient. |
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Arithmetic Sequence |
a sequence where there is a common difference. |
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Explicit Rule for an Arithmetic Sequence |
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Piecewise Function |
A function defined by two or more equations, each with a different "piece" of the domain. |
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Step Function |
A piecewise function defined by a constant value over a part of each domain. |
