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 axis.

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

How do you determine the equation of a line of best fit?

Back

The equation of a line of best fit can be determined using statistical methods such as linear regression, which calculates the slope and y-intercept based on the data points.

Front

What is the slope of a line in a scatter plot?

Back

The slope of a line in a scatter plot indicates the rate of change between the two variables represented on the axes.

Front

What does a positive slope indicate in a scatter plot?

Back

A positive slope indicates that as one variable increases, the other variable also increases.

Front

What does a negative slope indicate in a scatter plot?

Back

A negative slope indicates that as one variable increases, the other variable decreases.

Front

What is the y-intercept in the context of a line of best fit?

Back

The y-intercept is the value of the dependent variable when the independent variable is zero, represented as the point where the line crosses the y-axis.

Front

How can you use a scatter plot to make predictions?

Back

You can use a scatter plot to make predictions by extending the line of best fit to estimate the value of the dependent variable for a given independent variable.

Front

What is the purpose of using a scatter plot in data analysis?

Back

The purpose of using a scatter plot is to visually assess the relationship between two variables, identify trends, and detect any outliers.

Front

What is an outlier in a scatter plot?

Back

An outlier is a data point that significantly deviates from the overall pattern of the data in a scatter plot.