# GRP and impressions example 2

Subject: Advertising and Public Relations

Exam: TEE

Reader: https://deep-learning-study-room.vercel.app/apr/#tee/practice/numbers/grp2

Canonical: https://deep-learning-study-room.vercel.app/read/apr/tee/practice/numbers--grp2/

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

### Faculty-note worked example. A campaign reaches 75% of a target population of 20,000 with an average frequency of 5.4. Find GRP, unique people reached and gross impressions. All figures refer to the same period. [3 practice marks]

#### Answer

Faculty-note worked example: the values come from APR M2 notes p28. The question has been rewritten to teach the steps; this is not verbatim PYQ wording. Any practice-mark allocation is author-set.

## Given

| Reach | Average frequency | Target |
| --- | --- | --- |
| 75% | 5.4 | 20000 |

## 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



$$
75\times5.4=405\text{ GRPs}
$$



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



$$
75\div100=0.75
$$



#### Step 3. Calculate unique people reached



$$
0.75\times20000=15000
$$



#### Step 4. Calculate gross impressions



$$
15000\times5.4=81000
$$



**Final answer:** 405 GRPs; 15,000 people; 81,000 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.