Scatterplots Review #4

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 a positive correlation in a scatter plot 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 scatter plot indicate?

Back

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

Front

What does it mean if there is no correlation in a scatter plot?

Back

No correlation means that there is no apparent relationship between the two variables; changes in one variable do not predict changes in the other.

Front

How do you calculate the slope of a line in a scatter plot?

Back

The slope (m) is calculated using the formula: m = Rise/Run, where Rise is the change in the y-values and Run is the change in the x-values.

Front

What is the y-intercept in a linear equation?

Back

The y-intercept is the value of y when x is 0; it is the point where the line crosses the y-axis.

Front

What is the general form of a linear equation?

Back

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

Front

What does the equation y = kx represent?

Back

The equation y = kx represents a direct variation where y varies directly with x, and k is the constant of variation.

Front

How can you identify a linear relationship from a graph?

Back

A linear relationship can be identified if the data points form a straight line when plotted on a graph.

Front

What is the significance of the slope in a linear equation?

Back

The slope indicates the steepness of the line and the direction of the relationship between the variables.