Scatter Plots & Data Analysis Unit Test 4 of 154 of 15 Items
1. Which of the following best describes a scatter plot?
A. A plot that shows the relationship between two variables by displaying points on a graph
B. A plot that shows the frequency of different categories in a dataset
C. A plot that shows the distribution of a single variable in a dataset
D. A plot that shows the mean and standard deviation of a dataset
Answer: A. A plot that shows the relationship between two variables by displaying points on a graph
2. In a scatter plot, what does the line of best fit represent?
A. The average of the data points
B. The trend or pattern in the data
C. Outliers in the data
D. The maximum and minimum values in the data
Answer: B. The trend or pattern in the data
3. Which of the following is NOT a potential relationship that can be observed in a scatter plot?
A. Positive correlation
B. Negative correlation
C. No correlation
D. Exponential correlation
Answer: D. Exponential correlation
4. What does the correlation coefficient measure in a scatter plot?
A. The strength and direction of the relationship between the two variables
B. The spread of the data points around the mean
C. The average value of the data points
D. The slope of the line of best fit
Answer: A. The strength and direction of the relationship between the two variables
5. If the correlation coefficient is close to -1 in a scatter plot, what does this indicate?
A. A strong positive correlation between the two variables
B. A strong negative correlation between the two variables
C. No correlation between the two variables
D. A curved relationship between the two variables
Answer: B. A strong negative correlation between the two variables