# GRP and impressions example 3

Subject: Advertising and Public Relations

Exam: TEE

Reader: https://deep-learning-study-room.vercel.app/apr/#tee/practice/numbers/grp3

Canonical: https://deep-learning-study-room.vercel.app/read/apr/tee/practice/numbers--grp3/

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

| Reach | Average frequency | Target |
| --- | --- | --- |
| 40% | 2.5 | 8000 |

## To find

GRP, reached people and impressions.

## Formula and why



$$
\text{GRP}=R_{\%}\bar f
$$





$$
n=\frac{R_{\%}}{100}N,\qquad I=n\bar f
$$



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



$$
40\times2.5=100\text{ GRPs}
$$



#### Step 2. Convert reach to a fraction



$$
40\div100=0.4
$$



#### Step 3. Calculate unique people reached



$$
0.4\times8000=3200
$$



#### Step 4. Calculate gross impressions



$$
3200\times2.5=8000
$$



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

#### Practical interpretation · What the answer means

GRP is a repeated-exposure weight. Report people for unique reach and impressions for total opportunities; those are different quantities.