Scatterplots

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an observation in the dataset.

Front

What does the y-intercept represent in a linear regression equation?

Back

The y-intercept represents the predicted value of the dependent variable (y) when the independent variable (x) is zero.

Front

What is the domain in a function?

Back

The domain is the set of all possible input values (x-values) for a function.

Front

What is the range in a function?

Back

The range is the set of all possible output values (y-values) for a function.

Front

What does a positive correlation in a scatterplot indicate?

Back

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

Front

What does a negative correlation in a scatterplot indicate?

Back

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

Front

What is a linear regression equation?

Back

A linear regression equation is a mathematical representation of the relationship between two variables, typically in the form y = mx + b.

Front

What does the slope of a linear regression line represent?

Back

The slope represents the rate of change of the dependent variable (y) with respect to the independent variable (x).

Front

How can you identify a trend in a scatterplot?

Back

A trend can be identified by observing the overall direction of the points in the scatterplot, whether they rise, fall, or remain constant.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually assess the relationship between two quantitative variables and to identify patterns or trends.