Exploring Rational Expressions: Adding and Subtracting

What is the direction of a scatter plot where the points are closely packed and moving upwards?

• Strong negative

• Strong positive

• Moderate negative

• Moderate positive

If a scatter plot shows points tightly clumped together and moving downwards, what is the correlation?

• Moderate positive

• Strong negative

• Moderate negative

• Strong positive

How would you describe a scatter plot with loosely grouped points moving upwards?

• Strong negative

• Moderate negative

• Moderate positive

• Strong positive

What type of trend is shown by a non-linear scatter plot with a quadratic pattern?

• Exponential trend

• Linear trend

• Quadratic trend

• Logarithmic trend

Which tool is used in the video to calculate the correlation coefficient?

• Google Sheets

• Excel

• Python

• Desmos

What is the correlation coefficient value for a strong positive correlation?

• 0.7849

• 0.5074

• 0.9121

• 0.5498

What is the correlation coefficient value for a moderate positive correlation?

• 0.9121

• 0.5498

• 0.5074

• 0.7849

What does a negative correlation coefficient indicate about the direction of the scatter plot?

• The points are moving upwards

• The points are moving downwards

• The points form a quadratic trend

• The points are scattered randomly

What is the correlation coefficient value for a moderate negative correlation?

• 0.5498

• 0.9121

• 0.5074

• -0.5074

What is the correlation coefficient value for a strong positive correlation in the last table?

• 0.5074

• 0.5498

• 0.9121

• 0.7849