sampling bias

Sampling bias occurs when the group chosen for a study or survey doesn’t accurately represent the entire population. This can happen if certain groups are overrepresented or underrepresented, leading to results that don't reflect reality. For example, surveying only people in a city about national habits might miss rural perspectives. Such bias can skew conclusions, making them unreliable or misleading. Ensuring a diverse and representative sample helps produce more accurate and generalizable results.