Question 1
Two variables are said to be positively correlated if their values
◦ are always positive.
◦ only increase but never decrease.
◦ tend to move in the same direction.
◦ tend to move in opposite directions.
Question 2
Two variables are said to be negatively correlated if their values
◦ are always negative.
◦ only decrease but never increase.
◦ tend to move in the same direction.
◦ tend to move in opposite directions.