Question

how can outliers affect a scatter plot?
a. they have no effect on the scatter plot
b. they can distort the overall trend and affect the line of best fit
c. they always indicate errors in data collection
d. they make the scatter plot easier to interpret
what is the line of best fit?
a. a line that represents the highest value of data points
b. a line that connects all data points
c. a line that represents the lowest value of data points
d. a line that represents the average direction of data points

Explanation:

• For the first question: Outliers are data points that deviate significantly from the general pattern of the data. In a scatter plot, they can pull the line of best fit in their direction, thus distorting the overall trend.
• For the second question: The line of best fit is a straight line that best represents the data on a scatter plot. It is not based on the highest or lowest values or connecting all points but rather on the average direction of the data points.

Answer:

• First question: B. They can distort the overall trend and affect the line of best fit
• Second question: D. A line that represents the average direction of data points