Bissoy.com
Doctors Medicines MCQs Q&A

The variance of lognormal distribution is given by ____

The variance of lognormal distribution is given by ____ Correct Answer σ2 = e2θ+w2 (\(e^{w^{2}}\)-1)

The variance of a variable having a lognormal distribution is given by, σ2= e2θ+w2 (ew2-1).

Related Questions

The cumulative distribution function for the lognormal distribution is given by _____ \) b) \(\phi\) c) \(\phi\) d) \(\phi\)
For the calculation of Cpk the quality characteristic should have a lognormal distribution.
Statements given below are related to analysis of variance. Identify the statements that are true.
Statement I The shape of 'F' distribution depends on the number of degrees of freedom in both the numerator and the denominator of the 'F' ratio.
Statement II In analysis of variance, sample sizes should be equal.
Statement III Analysis of variance may be used to test whether the means of more than two populations are equal.
Which two of the following statements are true?  a) Skewness studies the flatness or peakedness of the distribution  b) A positively skewed distribution curve is stretched more to the right than to the left  c) On the basis of empirical relationship between mean, mode and median for moderately asymmetrical distribution, Karl Pearson's coefficient of skewness can be measured by 3 (Mean -Median) divided by Standard Deviation  d) If mean < mode, the distribution is positively skewed  Choose the correct option from those below: 
Consider a random variable to which a Poisson distribution is best fitted. It happens that P(x = 1) = $$\frac{2}{3}$$P(x = 2) on this distribution plot. The variance of this distribution will be
Statement I Exponential probability distribution has the mean = $$\frac{1}{\mu }$$ and variance = $$\frac{1}{{{\mu ^2}}}$$
Statement II The mean, median and mode do not coincide in the normal distribution.
Statement III The binomial distribution is symmetrical for any value of p (probability of success).
The following two statements relate to probability distributions. Choose the correct statements being correct or incorrect.
Statement I When 'p' and 'q' are equal in the binomial distribution, the shape of the distribution is perfectly symmetrical irrespectiveof the size of 'n'.
Statement II The mean and the variance of poisson distribution are not equal.
Lognormal distributions are a part of discrete distributions.
For a lognormal random variable, what is the value of mean?
In the question given below is given a statement followed by two conclusions. You have to assume everything in the statement to be true and decide which of the conclusion logically follows beyond a reasonable doubt from the information given in the statement. Statements: Only students having first division are invited to annual prize distribution function. Conclusions: I. No students of first division will be absent on annual prize distribution function. II. Students came in annual prize distribution function will be first divisions.