Scatterplots

Front

What is a scatterplot?

Back

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

Front

What does the line of best fit represent in a scatterplot?

Back

The line of best fit represents the trend in the data, showing the general direction that the data points follow.

Front

How can you determine the correlation from a scatterplot?

Back

You can determine the correlation by observing the direction of the data points: positive correlation (upward trend), negative correlation (downward trend), or no correlation (no clear trend).

Front

What is positive correlation?

Back

Positive correlation occurs when an increase in one variable leads to an increase in another variable.

Front

What is negative correlation?

Back

Negative correlation occurs when an increase in one variable leads to a decrease in another variable.

Front

What does no correlation mean?

Back

No correlation means that there is no apparent relationship between the two variables; changes in one do not affect the other.

Front

How do you use a trend line to make predictions?

Back

You can use a trend line to make predictions by extending the line to estimate values for one variable based on known values of the other variable.

Front

What is the purpose of a scatterplot?

Back

The purpose of a scatterplot is to visually display the relationship between two variables and to identify patterns or trends.

Front

What is the x-axis in a scatterplot?

Back

The x-axis is the horizontal axis that typically represents the independent variable.

Front

What is the y-axis in a scatterplot?

Back

The y-axis is the vertical axis that typically represents the dependent variable.