Scatter Plots Part 2

Front

What is a scatter plot?

Back

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

Front

What does the slope of a trend line represent?

Back

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

Front

How do you find the y-intercept of a trend line?

Back

The y-intercept of a trend line is the point where the line crosses the y-axis, indicating the value of y when x is 0.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

What does a line of best fit do?

Back

A line of best fit summarizes the trend in a scatter plot by minimizing the distance between the data points and the line.

Front

How can you determine the equation of the line of best fit?

Back

The equation of the line of best fit can be determined using statistical methods such as linear regression.

Front

What is the significance of the point (0, b) in a linear equation?

Back

The point (0, b) represents the y-intercept of the line, indicating the value of y when x is zero.

Front

What does a positive slope indicate in a scatter plot?

Back

A positive slope indicates that as the independent variable increases, the dependent variable also increases.

Front

What does a negative slope indicate in a scatter plot?

Back

A negative slope indicates that as the independent variable increases, the dependent variable decreases.

Front

How do you interpret the slope of a trend line?

Back

The slope indicates how much the dependent variable changes for each unit increase in the independent variable.