Q.Why is it important to clearly define the target group before starting a project?

The target group is the specific set of people or units the project's data and conclusions will be about, so settling it clearly at the start shapes almost every step that follows.

Why the target group comes early

The target group is the specific set of people or units the project's conclusions will be about — for example "Class XI students of this school" rather than the vague "students".

• Focus — a clearly defined group tells the student exactly who to approach, instead of collecting data haphazardly.
• Comparability — data from a well-defined, similar group can genuinely be averaged, compared or correlated; data from a mixed, loosely-defined group often can't be combined meaningfully.
• Realistic sample size — knowing the group in advance lets the student judge how many responses are actually needed and achievable.
• Honest conclusions — the project's conclusions can only be claimed to hold for the group actually studied; a vague target group leads to conclusions that overreach what the data can support.