Which of the following parameter control the relative flatness of normal distribution?
Correct answer: C. Standard Deviation
- A. None
- B. Mode
- C. Standard Deviation
- D. Mean
Explanation
The standard deviation controls the spread of a normal curve: a larger value makes it wider and flatter, while a smaller value makes it narrower and taller. The mean only shifts the curve horizontally and does not alter its relative flatness.
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