Which of the following relating to normal distribution are not correct?
(i) Co-efficient of skewness is three.
(ii) It is mesokurtic.
(iii) Mean deviation for it is $$\frac{2}{3}$$σ.
(iv) µ ± 2σ covers 94.45% area.
(v) Mean, median and mode are equal.
(vi) The standard normal variate z has mean one and SD zero.
A. (i), (iii) and (vi)
B. (iii), (iv) and (v)
C. (i), (iii) and (v)
D. (i), (iii) and (iv)
Answer: Option A
This Question Belongs to Commerce >> Business Statistics And Research Methods
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The difference between sample statistic and its corresponding population parameter is
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B. Measurement error
C. Coverage error
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A. Both (A) and (R) are true
B. (A) is true, but (R) is false
C. (A) is false, but (R) is true
D. Both (A) and (R) are false
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