In a cumulative frequency distribution created from the following simple frequency distribution,the score "7" would have a cumulative frequency equal to 
Definitions:
Marginal Revenue
The extra revenue generated from the sale of an additional unit of a product or service.
Deadweight Loss
The reduction in total surplus that results from a market distortion, such as a tax, subsidy, or price control.
Society's Welfare
A measure of the overall well-being and quality of life of the members of a society, often considered in economic terms but also including factors like health, education, and environmental quality.
Monopolist
An entity that is the sole provider of a particular product or service in the market, having significant control over pricing.
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