IA 2 Review pt. 1

Front

What is a positive correlation?

Back

A positive correlation is a relationship between two variables where, as one variable increases, the other variable also increases.

Front

What is a negative correlation?

Back

A negative correlation is a relationship between two variables where, as one variable increases, the other variable decreases.

Front

What does no correlation mean?

Back

No correlation means there is no relationship between two variables; changes in one variable do not affect the other.

Front

What is a correlation coefficient?

Back

A correlation coefficient is a numerical measure of the strength and direction of a relationship between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of r = -0.9 indicate?

Back

A correlation coefficient of r = -0.9 indicates a strong negative correlation between the two variables.

Front

What is the importance of data trends in decision-making?

Back

Data trends help decision-makers make more informed and accurate decisions by providing insights into patterns and relationships.

Front

How can you identify a negative correlation in a scatterplot?

Back

In a scatterplot, a negative correlation is identified when the points slope downwards from left to right.

Front

What is an example of a positive correlation?

Back

An example of a positive correlation is the relationship between hours studied and grades received; more study hours typically lead to higher grades.

Front

What is an example of a negative correlation?

Back

An example of a negative correlation is the relationship between the amount of time spent on social media and academic performance; more time on social media often leads to lower grades.

Front

What does a weak negative correlation look like?

Back

A weak negative correlation appears as a scattered pattern in a scatterplot, where the points trend slightly downwards but are widely spread.