A researcher randomly assigns students to two teaching conditions. The primary purpose of random assignment is to:

Type: MCQ • Marks: 1

A. Guarantee equal intelligence in both groups

B. Eliminate measurement error

C. Increase the sample size automatically

D. Reduce systematic pre-existing differences between groups

Explanation

Random assignment helps distribute participant characteristics across groups, strengthening causal inference.

UPSC Principal & Vice Principal Pedagogy in Education

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