STAAR Review 9 - Trend Lines & Linear vs. Non Linear

Front

What is a scatterplot?

Back

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

Front

What does a positive association in a scatterplot indicate?

Back

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

Front

What does a negative association in a scatterplot indicate?

Back

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

Front

What is no association in a scatterplot?

Back

No association means there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

How do you interpret a trend line in a scatterplot?

Back

A trend line shows the general direction of the data points and helps predict values based on the relationship between the variables.

Front

What is a linear relationship?

Back

A linear relationship is a relationship between two variables that can be represented by a straight line on a graph.

Front

What is a non-linear relationship?

Back

A non-linear relationship is a relationship between two variables that cannot be represented by a straight line; it may curve or change direction.

Front

How can you predict a value using a scatterplot?

Back

You can predict a value by finding the corresponding point on the trend line for a given value of one variable.

Front

What is the purpose of using a scatterplot?

Back

The purpose of using a scatterplot is to visually display the relationship between two quantitative variables.

Front

What does it mean if a scatterplot has a strong correlation?

Back

A strong correlation means that the data points are closely clustered around the trend line, indicating a strong relationship between the variables.