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Variance
A measure of dispersion the variance represents the average distance from any given observation in a series to the mean of that series in the units squared.
assignement
Budgetary control The manage or management of a governmental component in agreement with an approved budget for the purpose of keeping expenditures within the limits of available
a) Statistics are collecting, organizing, summarizing and presenting a set of data. b) Inferential statistics is the learn of a sample that enables us to make estimates about t
It is a numerical average, as equal to the sum of terms in a given series divided by the number of terms in that series is the mean which is also called the expected value.
What is a hypothesis test? Why do we need to use them to make decisions about relating sample results to the population; why can’t we just make our decisions by the sample value?
The lifetime T (in days) of an electrical component has reliability function given by: R(t) = e - 0 : 01 t for time t > 0. An electrical system consists of four such component
1. Suppose that there is a Beta(2,2) prior distribution on the probability µ that a coin will yield a "head" when spun in a speci?ed manner. The coin is independently spun 10 times
Calculate Correlation coefficient for X and Y, Statistics Homework • Variable X x • Variable Y y • Calculate: • z-scores for all values in the variables • correlation coefficien
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