Scatter Plots and Bivariate Data

What is the y-intercept shown on the graph?

True/False: A scatter plot has a line of best fit to show an approximation of future data points, not a perfect prediction.

• True

• False

Look at Graph 1. What terms could be used to describe this scatter plot? (Choose two.)

• Positive Slope

• Negative Slope

• Linear

• Nonlinear

The data in a scatter plot will alway be in a perfectly straight line.

• True

• False

Look at Graph 2. Is this an appropriate line of best fit? If no, how would you say to fix it?

• Yes, it looks great!

• No, it needs to go the other direction (positive slope instead of negative slope).

• No, it should keep it's same slope, but move down so it is directly below where it is now.

is a diagram that uses coordinates to display values for two variables for a set of data.

• dot plot

• scatter plot

• histogram

• stem and leaf plot

Bivariate data involves

• one variable

• two variables

• three variables

• four variables

The correlation is positive if the y variable generally increases as the x variable increases.

• True

• False

Choose two words from those listed below to best describe the correlation between the two variables.

• strong

• weak

• positive

• negative

Choose two words from those listed below to best describe the correlation between the two variables.

• strong

• weak

• positive

• negative