1. What type of relationship is shown in the scatterplot below?
A. Positive correlation
B. Negative correlation
C. No correlation
D. Nonlinear correlation
2. Which of the following is true about the correlation coefficient?
A. It can range from -1 to 1
B. A value of 0 indicates no correlation
C. A positive value indicates a positive correlation
D. All of the above
3. What is the purpose of a line of best fit in a scatterplot?
A. To make the data look more organized
B. To predict future data points
C. To show the relationship between the two variables
D. None of the above
4. In the scatterplot below, what does each point represent?
A. A data point
B. A category
C. A label
D. None of the above
5. Which of the following statements is true about interpreting scatterplots?
A. The independent variable is always on the x-axis
B. The dependent variable is always on the y-axis
C. The correlation coefficient can be used to quantify the relationship between the variables
D. All of the above
6. What does it mean if the correlation coefficient is close to -1?
A. There is a strong positive correlation
B. There is a strong negative correlation
C. There is no correlation
D. None of the above
7. When would it be appropriate to use a scatterplot to analyze data?
A. When there is only one variable
B. When there are two or more variables
C. When the data is already organized in a table
D. None of the above
8. Which of the following is NOT a common pattern found in scatterplots?
A. Linear
B. Quadratic
C. Exponential
D. Circular
9. How can you determine if a relationship is significant in a scatterplot?
A. Look at the shape of the plot
B. Calculate the correlation coefficient
C. Estimate the change in the dependent variable for a given change in the independent variable
D. All of the above
10. Which of the following is an example of a scatterplot question?
A. What is the correlation coefficient?
B. Which variable is on the x-axis?
C. What is the line of best fit?
D. All of the above
Answer Key:
1. A. Positive correlation
2. D. All of the above
3. B. To predict future data points
4. A. A data point
5. D. All of the above
6. B. There is a strong negative correlation
7. B. When there are two or more variables
8. D. Circular
9. D. All of the above
10. B. Which variable is on the x-axis?
Unit seven scatterplots and data analyzes lesson 12 scatterplots and data analyzes unit test
1 answer
1 answer