Stats review- Unit 3 test

Front

What is the equation of the line of best fit?

Back

y = -2x + 10

Front

What kind of correlation does a scatterplot with points trending upwards show?

Back

Positive correlation

Front

As the age of the car increases, what happens to its value?

Back

The value decreases.

Front

What type of correlation does a scatterplot with points trending downwards show?

Back

Negative correlation

Front

If a graph shows the relationship between the amount of gas in a car's tank after going on a trip, what does it indicate?

Back

It indicates how much gas is left after traveling a certain distance.

Front

What is a scatterplot?

Back

A scatterplot is a graph that shows the relationship between two variables by displaying data points.

Front

What does a negative correlation indicate in a scatterplot?

Back

As one variable increases, the other variable decreases.

Front

What does a positive correlation indicate in a scatterplot?

Back

As one variable increases, the other variable also increases.

Front

What is the purpose of the line of best fit in a scatterplot?

Back

To summarize the relationship between the variables and make predictions.

Front

How can you determine the strength of a correlation in a scatterplot?

Back

By observing how closely the data points cluster around the line of best fit.