The standard deviation is the __________ of the variance?
Correct answer: B. square root
- A. square
- B. square root
- C. cube
- D. cube root
Explanation
Variance is expressed in squared units, whereas standard deviation returns the measure to the original units by taking the square root of variance. Hence, standard deviation is the square root of variance.
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About Assessment and Evaluation
Assessment gathers evidence of learning, while evaluation uses that evidence to judge achievement, teaching or a programme. Coverage includes formative and summative assessment, diagnostic and placement tests, validity, reliability, objectivity, scoring, grading, feedback, and norm-referenced versus criterion-referenced interpretation. Measurement supplies numerical results, but evaluation involves a broader judgement.
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