Name that variable
What is the explanatory variable:
square footage of a house and selling price
What is square footage?
The axis that the explanatory variable is on
What is the x-axis?
The direction and strength of a correlation of 0.95
What is strong positive?
The direction of association when both the explanatory and response variable increase.
What is a positive association?
The correlation coefficient for a perfectly straight positive line.
What is the response variable:
training program and vertical jump distance
What is vertical jump distance?
The axis the response variable is on.
What is the y-axis?
The direction and strength of a correlation of -0.25
What is weak negative?
The direction of association when the explanatory variable increases and response variable decreases.
What is a negative association?
A correlation coefficient that shows no association.
What is (a number close to 0)?
What is the explanatory variable:
Number of days absent and overall grade
What is the number of days absent?
The name used to describe if a scatterplot is positive or negative.
What is the direction?
The type of association when the correlation coefficient is 0
What is no association?
The description of data when there is no association.
What is randomly scattered?
Give an example of a correlation coefficient that is weak and positive.
(answers vary)
What is the response variable:
Hours studying and score on a test
What is the score on a test?
The word that describes how closely the data is in relation to each other.
What is the strength?
The range of possible values for correlation coefficient
What is -1 to +1?
What type of association would you expect age of a car and selling price to have? (give direction)
What is negative?
The classification of a correlation of -0.5.
What is moderate negative?
What is the explanatory variable:
The plant growth and amount of fertilizer
What is the amount of fertilizer?
What would a scatterplot with no linear correlation look like?
What is a cloud of points or a curve?
Correlation does not mean
What is causation?
What is positive?
Give an example of a correlation coefficient that is a strong negative association.
What is (a number from -0.75 and -1)?