Scatter Graph Analysis

What type of relationship is shown in a scatter graph where the points are clustered closely together and form a straight line?

• Curved relationship

• Linear relationship

• Dispersed relationship

• Non-linear relationship

In a scatter graph, if the points are spread out and do not follow a pattern, what type of correlation is present?

• Positive correlation

• Negative correlation

• No correlation

• Perfect correlation

How can you determine the strength of a correlation in a scatter graph?

• Calculate the correlation coefficient.

• Measure the distance between points.

• Look at the color of the points.

• Count the number of data points.

What does a positive correlation in a scatter graph indicate?

• No relationship between the variables

• Negative relationship between the variables

• Inverse relationship where one variable increases as the other decreases

• Direct relationship between the variables where they both increase together.

If the line of best fit in a scatter graph has a steep slope, what does it suggest about the relationship between the variables?

• Moderate positive correlation

• Weak negative correlation

• No correlation

• Strong positive correlation

In a scatter graph, if the points form a curve, what type of correlation is likely present?

• Positive correlation

• Perfect correlation

• Negative correlation

• Non-linear correlation

What is the purpose of calculating the line of best fit in a scatter graph?

• To calculate the average of the variables

• To determine the color scheme of the graph

• To find the equation that best represents the relationship between the variables being plotted.

• To confuse the viewer of the graph

If the line of best fit in a scatter graph is horizontal, what does it suggest about the relationship between the variables?

• The data is not reliable.

• There is no relationship between the variables.

• The variables are negatively correlated.

• There is a strong positive relationship between the variables.

How can outliers affect the interpretation of a scatter graph?

• Outliers have no impact on the interpretation of a scatter graph

• Outliers always improve the accuracy of the scatter graph

• Outliers can distort the interpretation of the relationship between variables by pulling the regression line towards them.

• Outliers only affect the x-axis in a scatter graph

What does a negative correlation in a scatter graph indicate?

• Inverse relationship between the two variables

• Positive relationship between the two variables

• No relationship between the two variables

• Perfect positive correlation between the two variables