Crossword Puzzle CorrelationsOnline version Terms used in correlational research and statistics by amber alliger 1 statistics that involve more than one variable 2 two variables or two levels of one variable 3 a correlation that tests the relationship of ranked data 4 variable is the one that is thought to be affecting the outcome variable 5 correlation tests the strength and direction of relationships of linear data. 6 when the two variables being tested increase or decrease in opposite directions from each other 7 correlation when the two variables being tested increase or decrease in the same direction to each other 8 variable is thought to be affected by the predictor variable 9 type of graph that displays correlational data 5 2 4 9 8 6 1 7