Module 2 Practice Questions (3)

Front

What is the correlation coefficient?

Back

A statistical measure that describes the strength and direction of a relationship between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of r = -0.527 indicate?

Back

It indicates a moderate negative correlation between the two variables.

Front

What does a downward trend in a scatter plot suggest?

Back

It suggests a negative correlation between the variables.

Front

Define positive correlation.

Back

A relationship where an increase in one variable leads to an increase in another variable.

Front

Define negative correlation.

Back

A relationship where an increase in one variable leads to a decrease in another variable.

Front

What is a curvilinear relationship?

Back

A relationship between two variables that is not linear, meaning it can be represented by a curve.

Front

What does 'case C -> Q' represent in research?

Back

It represents a case study where a variable (C) is used to predict or explain a quantitative outcome (Q).

Front

What does 'case Q -> Q' represent in research?

Back

It represents a study where two quantitative variables (Q) are analyzed to find a relationship.

Front

What is the significance of scatter plots in correlation analysis?

Back

Scatter plots visually represent the relationship between two quantitative variables, helping to identify trends.

Front

What is the difference between strong and weak correlation?

Back

Strong correlation indicates a close relationship between variables, while weak correlation indicates a loose relationship.