Consider the following correlation between the sale of ice cream and the number of forest fires.Which of the following is the null hypothesis for this correlation?a.When people buy more ice cream, they go outside and often start forest fires while smokingb.Ice cream sales and forest fires are correlated purely by chancec.In summers, the heat makes people buy ice cream and also leads to forest firesd.During forest fires, people buy ice creams for comfort

A correlation of r = 0.85 is found between weekly sales of firewood and cough drops over a 1-year period. Which of the following is a correct interpretation of this correlation value? Fire must be the cause of coughing. Temperature is a possible lurking variable that is behind this relationship. There is a pretty strong positive linear relationship between sales of firewood and cough drops.

Assertion (A) Sale of ice-cream increases during summer, shows positive correlation.Reason (R) When two variables move in same direction, it shows positive correlation.

Consider the statement below:The divorce rate in Maine decreases with the per-capita consumption of margarine.Which relation best describes this statement?Accidental correlationCausationNegative correlationPositive correlation

There is a strong positive linear correlation between rainfall and the number of oranges a tree produces. Does this mean that more rainfall causes orange trees to produce more fruit?A.Yes. Since rainfall and number of oranges are positively correlated, this means that more rainfall causes orange trees to produce more fruit.B.Yes. Since rainfall and number of oranges are linearly correlated, this means that more rainfall causes orange trees to produce more fruit.C.No. Any number of factors could also be affecting the number of oranges produced.D.No. Since rainfall and number of oranges are linearly correlated, this means that more rainfall causes orange trees to produce less fruit.SUBMITarrow_backPREVIOUS

What explains the correlation in the following graph?a.Rising video game sales causes a rise in nuclear energy productionb.They are correlated by chancec.Rising nuclear energy production causes a rise in video games salesd.There is a common cause which is increasing nuclear energy production and video game sales