Module 5 Review

Front

What does a strong negative correlation indicate about the relationship between two variables?

Back

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

Front

What is the relationship between a negative correlation coefficient and the slope of the line of best fit?

Back

If a correlation coefficient is negative, the slope of the line of best fit should also be negative.

Front

What type of graph is used to visually represent the correlation between two variables?

Back

A scatterplot is used to graphically represent the correlation between two variables.

Front

What is the equation of the line of best fit if the slope is 4.6 and the y-intercept is -347?

Back

The equation of the line of best fit is y = 4.6x - 347.

Front

What does the correlation coefficient (r) indicate in a dataset?

Back

The correlation coefficient (r) indicates the strength and direction of a linear relationship between two variables.

Front

What is the range of possible values for the correlation coefficient (r)?

Back

The correlation coefficient (r) ranges from -1 to 1.

Front

What does an r value of 0.942 suggest about the correlation between two variables?

Back

An r value of 0.942 suggests a very strong positive correlation between the two variables.

Front

What does an r value of 0.10 indicate about the correlation between two variables?

Back

An r value of 0.10 indicates a weak positive correlation between the two variables.

Front

How can you determine the line of best fit using a graphing calculator?

Back

You can determine the line of best fit by inputting the data points into the graphing calculator and using the regression analysis feature.

Front

What is the purpose of constructing a scatterplot?

Back

The purpose of constructing a scatterplot is to visually assess the relationship between two quantitative variables.