Making Predictions from Scatter Plots

Front

What is a scatter plot?

Back

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

Front

What does a trend line in a scatter plot represent?

Back

A trend line is a straight line that best represents the data points in a scatter plot, indicating the general direction of the data.

Front

How can you make predictions using a scatter plot?

Back

You can make predictions by analyzing the trend line and estimating values for one variable based on the corresponding values of another variable.

Front

What does it mean if the points in a scatter plot are closely clustered together?

Back

If the points are closely clustered, it indicates a strong correlation between the two variables.

Front

What does it mean if the points in a scatter plot are widely spread out?

Back

If the points are widely spread out, it indicates a weak correlation between the two variables.

Front

What is the purpose of using a scatter plot?

Back

The purpose of using a scatter plot is to visually represent the relationship between two quantitative variables and to identify trends or patterns.

Front

What is interpolation in the context of scatter plots?

Back

Interpolation is the process of estimating a value within the range of known data points in a scatter plot.

Front

What is extrapolation in the context of scatter plots?

Back

Extrapolation is the process of estimating a value outside the range of known data points in a scatter plot.

Front

How do you determine the best fit line for a scatter plot?

Back

The best fit line is determined by minimizing the distance between the line and all the data points, often using methods like least squares.

Front

What does a positive correlation look like in a scatter plot?

Back

A positive correlation is indicated by a trend line that slopes upwards from left to right, showing that as one variable increases, the other also increases.