0
Still curious? Ask our experts.
Chat with our AI personalities
Rene
Blake
BeauAdd your answer:
Earn +20 pts
Poisson distribution the mean and standard deviation?
The Poisson distribution is a discrete distribution, with random variable k, related to the number events. The discrete probability function (probability mass function) is given as: f(k; L) where L (lambda) is the mean and square root of lambda is the standard deviation, as given in the link below: http://en.wikipedia.org/wiki/Poisson_distribution
Given that the variance for a data set is 1.20 what is the standard deviation?
1.10
Given the mean of 259 and a standard deviation of 229.1 what is the z-score of the value 78?
(78-259)/229.1= -.79
Is standard deviation an absolute value?
No. Standard deviation is not an absolute value. The standard deviation is often written as a single positive value (magnitude), but it is really a binomial, and it equals both the positive and negative of the given magnitude. For example, if you are told that for a population the SD is 5.0, it really means +5.0 and -5.0 from the population mean. It defines a region within the distribution, starting at the lower magnitude (-5.0) increasing to zero (the mean), and another region starting at zero (the mean) and increasing up to the upper magnitude (+5.0). Both regions together define the (continuous) region of standard deviation from the mean value.
What is the z-score for a test score of 110?
In order to know the z-score, given a test score, you must also know the mean and the standard deviation. Please restate the question.
