A. Mean
B. S.D.
C. Variance
D. None of these
Related Mcqs:
- If the sampled population has a normal distribution, when is the sampling distribution of the sample mean X also a normal distribution ?
A. Only when the sample size is at least 100.
B. Only when the sample size is smaller than 30
C. Always
D. Only when the sample size is at least 30. - As the normal distribution is symmetrical, its mean, median and mode are:____________?
A. Coincide
B. Not equal
C. Different
D. None of These - Mean deviation of Normal Distribution is_____________?
A. 45σ
B. 34σ
C. 78σ
D. 23σ - In normal distribution, mean ______= Mode?
A. Quartile
B. Mean deviation
C. Median
D. S.D. - Area Under the normal curve on either side of mean is _____________?
A. 1
B. Mean value
C. 0.5
D. 2
E. -1 - Random samples of size 17 are from a population that has 200 elements, a mean of 36, and a standard deviation of 8. which of the following best describes the from of the sampling distribution of the sample mean for this situation ?
A. Approximately normal because the sample size is small relative to the population size
B. Approximately normal because of the central limit theorem
C. Exactly
D. None of these alternatives is correct - Combine mean calculated by different given mean is ________?
A. n1x1 + n2x2x + _____ nuxu/n1 +n2 + ___ + nu
B. n1x1 + n2x2x + _____ nuxu/x1 + x2 + ____ x4
C. n1x1 + n2x2x + _____ nuxu/n1 + n2 + ___+ nu
D. ∑n1x/x1 - condition for applying Central Limit Theorem (CLT) which approximate the sampling distribution of the mean with a normal distribution is ?
A. n > 30
B. N(1 – p) > 5
C. 2 n 5
E. N < 30 - N(µ, 2σ) means normally distribution with mean u and variance2σ then (3σ, 4) means _____________?
A. 46
B. 76
C. 36
D. 47 - If X ˜ N(16,49), the mean is___________?
A. 49
B. 16
C. 7
D. 4
