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Questions and Answers
What is a scatter plot?
What is a scatter plot?
A graph that relates two different sets of data by displaying them as ordered pairs.
What is a discrete graph?
What is a discrete graph?
A plot of ordered pairs not connected by a line.
What is a continuous graph?
What is a continuous graph?
A plot of ordered pairs connected by a line.
What is the line of best fit?
What is the line of best fit?
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What is the correlation coefficient (r-value)?
What is the correlation coefficient (r-value)?
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What is a residual?
What is a residual?
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What is linear regression?
What is linear regression?
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Study Notes
Scatter Plots in Algebra 1
- A scatter plot visually represents the relationship between two distinct sets of data using ordered pairs.
- Discrete graphs display individual points without connecting them, indicating separate data values.
- Continuous graphs connect ordered pairs with a line, illustrating data that flows without breaks.
Key Concepts
- A line of best fit serves as the most accurate trend line in a scatter plot, showcasing the relationship between the datasets effectively.
- The correlation coefficient (r-value) ranges from -1 to 1, indicating the degree of linear relationship; -1 signifies a perfect negative correlation, 1 signifies a perfect positive correlation, while an r-value of 0 indicates no correlation.
Additional Terms
- Residuals measure the difference between actual y-values from data points and the predicted y-values derived from a model.
- Linear regression is a statistical method used for analyzing the relationship between two variables, resulting in a linear equation that best fits the data.
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