Chapter 3 Bivariate Data Part 1

Front

What does the slope represent in a linear equation related to bivariate data?

Back

The slope indicates the rate of change of the dependent variable with respect to the independent variable.

Front

What is a scatter plot?

Back

A scatter plot is a diagram that uses coordinates to display values for two variables for a set of data.

Front

What does a positive correlation indicate in bivariate data?

Back

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

Front

What does a negative correlation indicate in bivariate data?

Back

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

Front

What is the correlation coefficient?

Back

The correlation coefficient is a numerical measure of the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of 0.37 indicate?

Back

A correlation coefficient of 0.37 indicates a weak positive linear relationship between the two variables.

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, minimizing the distance between the line and the data points.

Front

What is the formula for the line of best fit?

Back

The formula for the line of best fit is typically expressed as y = mx + b, where m is the slope and b is the y-intercept.

Front

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

Back

The y-intercept represents the value of the dependent variable when the independent variable is zero.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation indicates that one variable directly affects the other.