Sampling Bias And Representativeness Lesson

Scientist examines samples labeled “biased sample,” “Small sample,” and “carefully random sample”; board reads “PRECISION” and “REPRESENTATIVENESS.”

An illustrated laboratory scene shows a scientist using a magnifying glass to examine colorful bead-like samples in jars and dishes. A chalkboard behind her compares precision and representativeness with clustered and widely distributed points. Another researcher works with laboratory equipment in the background, while labels identify a biased sample, a small sample, and a carefully random sample. The warm, hand-drawn composition uses muted cream, gray, brown, and pastel colors to explain statistical sampling concepts.

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