Use the following to answer questions:
Figure: Dishwashing Detergent 
-(Figure: Dishwashing Detergent) Refer to the figure. Dishwashing detergent contains phosphates that harm marine life. In this figure, what is the external cost of using dishwashing detergent?
Definitions:
Standard Deviation
A statistical measure of the dispersion or variability of a set of data points around the mean or average value.
Scores
Numerical expressions of performance or achievement, often in the context of tests, games, or evaluations.
Mean
A statistical measure that determines the average value of a set of numbers.
Statistical Significance
A measure that indicates how likely it is that a given result could have occurred by chance, often used in hypothesis testing to determine if results are non-random.
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