Exploring Scatter Plots and Line of Best Fit

What does a scatter plot represent?

• A prediction of future data points

• A detailed analysis of a single data set

• The difference between two sets of data

• The relationship between two sets of data

What indicates a positive relationship in a scatter plot?

• No visible pattern

• Points create an upward slope

• Points create a downward slope

• Points are scattered randomly

What does a scatter plot with no clear pattern indicate?

• No relationship between the variables

• A strong negative relationship

• A strong positive relationship

• An error in data collection

How do you determine which variable goes on the x-axis?

• The dependent variable

• The independent variable

• The variable with higher values

• The variable with lower values

What does a negative relationship in a scatter plot look like?

• Points scattered randomly without direction

• Points creating an upward slope

• Points creating a downward slope

• Points clustered in the center of the plot

What is the purpose of the line of best fit?

• To separate positive and negative values

• To highlight outliers in the data set

• To connect all the data points directly

• To estimate the relationship between two variables

How can the line of best fit be used for predictions?

• By determining the slope of the line

• By extending the line beyond the data range

• By finding the y-intercept of the line

• By calculating the area under the line

How do you plot the line of best fit?

• By calculating the mean of the data points

• By using a ruler to connect the highest and lowest points

• By drawing a line that splits the data points evenly

• By drawing a line that touches all points

What is the correct form for the equation of the line of best fit?

• y = mx + b

• y = bx + m

• x = my + b

• x = by + m

How is the slope of the line of best fit determined?

• Change in y over change in x

• Change in x over change in y

• Sum of x divided by sum of y

• Sum of y divided by sum of x