1. two variables two sets of data
Scatterplots: a way to organize data in _____ ______________.
Points plotted on a graph can show a possible relationship between ______________________________________.
These three scatterplots show the types of relationships two sets of data may have.
NOTE: The words “correlation” and “association” are both used. Just because there may be a correlation between the two sets of data does NOT mean there is “causation.” One may NOT affect (or cause) the other.
Data values ___________ One set of data values ____________
or _________ together. while the other _____________.
Sometimes they may ask you how strong an association or correlation is.
two variables
two sets of data
Sometimes data looks somewhat ____________, like you could draw a line through the center of the data.
Sometimes data is
____ _________.
linear
not linear
increase
increases
decrease
decreases