Advertising and Public Relations · TEE · practice

GRP and impressions example 3

Optional numerical practice

Extra drills; no claim that these exact questions or allocated marks appeared in TEE

Optional practice question. A campaign reaches 40% of a target population of 8,000 with an average frequency of 2.5. Find GRP, unique people reached and gross impressions. All figures refer to the same period. [3 practice marks]

Answer

Authored illustration: these numbers were chosen to explain a faculty-note concept. No matching supplied-data question was found in the 14 recovered APR papers. Standalone calculation drills are optional practice; their marks are author-set.

Given

ReachAverage frequencyTarget
40%2.58000

To find

GRP, reached people and impressions.

Formula and why

\text{GRP}=R_{\%}\bar fLaTeX: \text{GRP}=R_{\%}\bar f
n=\frac{R_{\%}}{100}N,\qquad I=n\bar fLaTeX: n=\frac{R_{\%}}{100}N,\qquad I=n\bar f

Use the percentage number in GRP. Divide it by 100 when finding a fraction of the population.

Step-by-step solution

Step 1. Calculate GRP

40\times2.5=100\text{ GRPs}LaTeX: 40\times2.5=100\text{ GRPs}

Step 2. Convert reach to a fraction

40\div100=0.4LaTeX: 40\div100=0.4

Step 3. Calculate unique people reached

0.4\times8000=3200LaTeX: 0.4\times8000=3200

Step 4. Calculate gross impressions

3200\times2.5=8000LaTeX: 3200\times2.5=8000

Final answer: 100 GRPs; 3,200 people; 8,000 gross impressions.