Stats review- Unit 3 test

Front

What is a positive linear association?

Back

A relationship where as one variable increases, the other variable also increases, resulting in a straight line when graphed.

Front

What is a negative linear association?

Back

A relationship where as one variable increases, the other variable decreases, resulting in a straight line with a downward slope when graphed.

Front

What does 'no association' mean in a scatter plot?

Back

It indicates that there is no discernible relationship between the two variables being plotted.

Front

What is a nonlinear association?

Back

A relationship between two variables that does not form a straight line when graphed, indicating a more complex relationship.

Front

How do you interpret a scatter plot?

Back

By analyzing the pattern of points to determine the type of association (positive, negative, no association, or nonlinear) between the variables.

Front

What is a trend line?

Back

A line that best represents the data points in a scatter plot, showing the general direction of the data.

Front

How can you estimate values using a trend line?

Back

By locating the desired value on one axis and finding the corresponding value on the other axis along the trend line.

Front

What does it mean if a trend line slopes upwards?

Back

It indicates a positive correlation between the two variables, meaning as one increases, the other tends to increase.

Front

What does it mean if a trend line slopes downwards?

Back

It indicates a negative correlation between the two variables, meaning as one increases, the other tends to decrease.

Front

What is the line of best fit?

Back

A straight line that best represents the data in a scatter plot, minimizing the distance between the line and all data points.