# Ratings across insertions

Subject: Advertising and Public Relations

Exam: TEE

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

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

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

### Optional practice question. An advertisement is inserted twice in a programme with a rating of 12 and three times in a programme with a rating of 8. All ratings use the same target universe. Find total GRP. Can unique reach be inferred? [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

| Programme rating | Insertions |
| --- | --- |
| 12 | 2 |
| 8 | 3 |

## To find

Total GRP and whether unique reach is known.

## Formula and why



$$
\text{GRP}=\sum_j (\text{rating}_j\times\text{insertions}_j)
$$



Each insertion contributes its rating points. Audience duplication between insertions remains in GRP.

## Step-by-step solution

#### Step 1. First programme contribution



$$
12\times2=24
$$



#### Step 2. Second programme contribution



$$
8\times3=24
$$



#### Step 3. Add rating points



$$
24+24=48\text{ GRPs}
$$



#### Step 4. Assess what is missing

Unique reach cannot be determined: the overlap between the audiences is not supplied.

**Final answer:** 48 GRPs; insufficient information for unique reach.

#### Practical interpretation · What the answer means

Do not treat summed ratings as unique audience percentage. Repeated viewers may appear in several insertions.