Scatter Plots in Algebra 1

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.