Find the mean of the scores in the following frequency distribution.Remember the f column indicates the number of times each score occurred in the original data set. 
Definitions:
Arc Advertising Elasticity
The measure of a market's responsiveness to a change in advertising expenditure over a specified range, indicating the effectiveness of advertising campaigns.
Advertising Expenditure
The amount of money a company spends on promoting its products or services through various advertising channels.
Advertising Elasticity of Demand
The responsiveness of the quantity demanded of a product to a change in the expenditure on advertising.
Rule of Thumb for Advertising
Simplified principles or guidelines that provide a baseline for allocating advertising budgets or measuring advertising effectiveness.
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