Gross rating points are calculated by multiplying reach by average frequency.

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This is the formula for calculating gross rating points (GRPs), which are commonly used in advertising to measure the impact of a campaign. Reach refers to the percentage of the target audience that is exposed to the advertising, while frequency refers to the average number of times that each member of the audience is exposed to the advertising. Multiplying these two numbers together gives the total number of GRPs for the campaign.

Gross Rating Points Are Calculated by Multiplying Reach by Average