Scatter Plots Review

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 a scatter plot has no correlation?

Back

It means there is no predictable pattern between the two variables; the data points are scattered randomly.

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, showing the trend of the data.

Front

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

Back

The slope is determined by the change in the y-values divided by the change in the x-values between two points on the line.

Front

What is the equation of a linear function?

Back

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

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 where the line crosses the y-axis.

Front

How can you identify outliers in a scatter plot?

Back

Outliers are data points that fall far away from the general trend of the data; they do not fit the pattern of the other points.

Front

What is the purpose of fitting a linear model to data?

Back

Fitting a linear model helps to summarize the relationship between variables and make predictions based on that relationship.