Manipulation of variables always __________ in experimental?
Correct answer: A. possible
- A. possible
- B. impossible
- C. both
- D. None of these
Explanation
Experimental research requires the researcher to manipulate an independent variable and observe its effect on a dependent variable. Without manipulation, a study is generally observational or non-experimental.
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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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