Vocabulary
Data for two tables
Bivariate data
A scatter plot of data is shown at the right. Which association (correlation) best describes the data?
A)non-linear correlation
B)no association
C)negative linear association
A
A correlation where one variable increases, the other also increases, or as one decreases so does the other
Positive Correlation
Which equation best models this set of data?
A) y=8x-2/3
B) y=2/3x-8
C) y=-2/3x+8
C
A correlation where one variable increases, and the other decreases
Which statement is true about the data in a scatter plot where the y-values are decreasing as the x-values are increasing?
A) the data can be modeled by a vertical line
B) the data can be modeled by a line with a negative slope
C) the data can be modeled by a horizontal line
B
A line that shows the general direction in a group of points is headed
Line of best fit
In a regression analysis, the y-variable should be the ___________ variable, and the x-variable should be the ___________ variable.
A) Independent, Dependent
B) Dependent, independent
C) First, Second
B
Arranged in a straight line
Linear
Which of the following shows the least correlation between two variables?
A) 0
B) 0.25
C) -0.25
A