Scatter Plots

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional grid.

Front

What does a line of best fit represent in a scatter plot?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, indicating the trend of the data points.

Front

What is correlation in the context of scatter plots?

Back

Correlation refers to the strength and direction of a relationship between two variables, which can be positive, negative, or none.

Front

What does a positive correlation indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

How can you determine the slope of a line of best fit?

Back

The slope of a line of best fit can be determined by calculating the change in the y-values divided by the change in the x-values between two points on the line.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the y-intercept represent in a scatter plot?

Back

The y-intercept represents the value of the dependent variable when the independent variable is zero.

Front

How do you interpret the slope of a line of best fit?

Back

The slope indicates how much the dependent variable changes for each unit change in the independent variable.

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that significantly differs from the other points in the dataset, potentially affecting the line of best fit.