There is a linear relationship between the high temperature of the day (measured in degrees Fahrenheit)...
There is a linear relationship between the high temperature of the day (measured in degrees Fahrenheit) and the number of ice cream cones sold at Disneyland. Consider the correlation r between the high temperature of the day and the number of ice cream cones sold. Which one of the following statements is true about this correlation?
A r in this example would have the units of “degrees Fahrenheit per cone.”
B If higher temperatures are associated with fewer ice cream cones sold, then r will be positive.
C r would not change if we measured temperature in degrees Celsius rather than degrees Fahrenheit.
D A value of r close to 0 is considered to be the sign of a strong relationship.
r can be less than –1 or greater than +1.
Homework Answers
Correlation measures the relationship between X and Y. It’s range from -1 to 1. If r=0 then there is no relationship between x and y.
Ans: B) If higher temperatures are associated with fewer ice creams cones sold then r will be positive.
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