# Audience user index

Subject: Advertising and Public Relations

Exam: TEE

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

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

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

### Optional practice question. A demographic segment contains 15% of the population but 24% of a product’s users. Find its user index and interpret the result. [2 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

| User share | Population share |
| --- | --- |
| 24% | 15% |

## To find

User index.

## Formula and why



$$
\text{Index}=\frac{\%\text{ users in segment}}{\%\text{ population in segment}}\times100
$$



Compare the group’s representation among users against its population representation.

## Step-by-step solution

#### Step 1. Substitute the percentages



$$
\frac{24}{15}\times100
$$



#### Step 2. Divide



$$
24\div15=1.6
$$



#### Step 3. Scale and compare



$$
1.6\times100=160
$$



**Final answer:** Index = 160.

#### Practical interpretation · What the answer means

The segment is 1.6 times as represented among users as in the population. This does not mean that 160% of the segment uses the product.