8th Unit 8 REVIEW

Front

What is positive correlation?

Back

A relationship between two variables where, as one variable increases, the other variable also increases.

Front

What is negative correlation?

Back

A relationship between two variables where, as one variable increases, the other variable decreases.

Front

What does causation mean?

Back

A relationship where one event causes another event to occur.

Front

What is correlation coefficient?

Back

A numerical measure of the strength and direction of a relationship between two variables.

Front

What does a scatter plot represent?

Back

A graph that shows the relationship between two quantitative variables.

Front

How do you interpret a trend line in a scatter plot?

Back

A trend line indicates the general direction of the data points and can be used to make predictions.

Front

If a scatter plot shows a downward trend, what type of correlation is present?

Back

Negative correlation.

Front

If a scatter plot shows an upward trend, what type of correlation is present?

Back

Positive correlation.

Front

What does it mean if there is no correlation between two variables?

Back

There is no predictable relationship between the two variables.

Front

How can you predict values using a trend line?

Back

By extending the trend line and finding where it intersects with the value of interest.