A Fish Swims 4

question 81

Multiple Choice

A fish swims 4.0 m below the surface of a still lake as shown in the figure.When an archer attempts to shoot the fish,the arrow enters the water at point P that is a horizontal distance 1.2 m from the fish.

-If the archer is successful in shooting the fish,what angle does the arrow make with the horizontal as it enters the water?

• A)12°
• B)17°
• C)23°
• D)67°
• E)73°

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Definitions:

Coefficient of Determination

A statistical measure that represents the proportion of the variance for a dependent variable that's explained by an independent variable or variables in a regression model.

Correlation

A statistical measure that expresses the extent to which two variables change together, ranging from -1 to 1.

Pearson Correlation

A measure of the linear relationship between two variables, ranging from -1 to 1, where 1 means a perfect positive correlation and -1 means a perfect negative correlation.

Correlation Coefficient

A statistical measure that quantifies the degree of relationship or association between two variables.