Unit 4 Assessment

Front

What is the equation of the line of best fit for the data collected on the amount of income earned by lawn companies in relation to the number of yards mowed?

Back

y = 30x

Front

What does a correlation coefficient of -0.524 indicate about the relationship between two variables?

Back

There is a moderate negative correlation between the variables.

Front

What type of correlation is expected between Time Spent Watching TV and Grades?

Back

Negative correlation

Front

What type of association does a graph showing no relationship indicate?

Back

No relationship

Front

What does correlation measure in statistics?

Back

Correlation measures how strong or weak the relationship between two quantitative variables is.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables.

Front

Define causation in the context of statistics.

Back

Causation indicates that one variable directly affects another.

Front

What is a positive correlation?

Back

A positive correlation means that as one variable increases, the other variable also increases.

Front

What is a negative correlation?

Back

A negative correlation means that as one variable increases, the other variable decreases.

Front

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

Back

It means that there is no predictable relationship between the two variables.