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Would one expect more variance with a larger sample size in a chi distribution?
The larger your sample size, the less variance there will be. For instance, your information is going to be much more substantial if you took 1000 samples over 10 samples.
What is the variance of a inverse gamma distribution with alpha equals 2?
When alpha is 2 or less than 2 the variance of the inverse gamma doesn't exist. That is why when the variance is defined for the inverse gamma it always says "for α > 2". It is also the case that when alpha is 1 or less the mean of the inverse gamma doesn't exist. In order to really undertand what it means to say the variance doesn't exist (or the mean doesn't exist) you need to understand the mathematical definition of the variance (and of the mean). I don't know how to add the necessary symbols to clearly explain this. However, just briefly, mathematically both the mean and variance of the gamma density are definite integrals over the support of the density, which is 0 to infinity. In general, sometimes a definity integral over an infinite range (negative and/or positive) exists and sometimes it doesn't. In the case of the definite integral for the variance on the inverse gamma, when alpha less than or equal to 2, this integral doesn't exist.
What is recursive rule?
A recursive rule is one which can be applied over and over again to its own output
How do you use variance analysis?
When data is homogeneous over k independent samples of size n_i for i=1,2,...,k, the pooled variance is given by s_p^2=((n_1-1) s_1^2+(n_2-1) s_2^2+⋯(n_k-1) s_k^2)/(n_1+n_2+⋯+n_k-k)
How is this relevant to marketing Assume the frequency that a household purchases milk per year is a normal distribution with a mean of 12. Over time the mean stays the same but the variance decreases?
It should make marketing easier because the amount purchased has a smaller variance. This means that the numbers are closer to 12 and so there is less of a need to carry large stocks for when the demand is high.
If actual overhead for the year is 33451 and applied overhead is 32000 is the overhead variance over applied or under applied assuming the amount is immaterial how would you dispose of the variance?
Difference between actual overhead and applied overhead is as follows: Difference = 33451 - 32000 = 1450 Difference of variance will be charged to income statement.
When a simple machine is used to perform a task what factors may be affected?
the amount of force needed to perform the task the distance over which the force is applied the direction in which the force is applied
When a simple machine is used to perform a task factors may be affected?
the amount of force needed to perform the task the distance over which the force is applied the direction in which the force is applied
What is a positive or negative variance of a budget?
A variance is the difference between the projected budget and the actual performance for a particular account. A negative variance means that the budgeted amount was greater than the actual amount spent. A positive variance means that the budgeted amount was less than the actual amount spent. Note there is some debate over whether a negative variance means an underrun or an overrun. The Project Management Institute, however, endorses the accepted convention that a negative variance is a bad thing, and a positive variance a good thing.
What have you learned in world civilization or history Answers should be practical and can be applied in present time?
How historical events repeat themselves over time.. Common factors and reasons to justify an event over time.
What is the significance of variance in statistics?
Variance is a measure of "relative to the mean, how far away does the other data fall" - it is a measure of dispersion. A high variance would indicate that your data is very much spread out over a large area (random), whereas a low variance would indicate that all your data is very similar.Standard deviation (the square root of the variance) is a measure of "on average, how far away does the data fall from the mean". It can be interpreted in a similar way to the variance, but since it is square rooted, it is less susceptible to outliers.
Force is applied to an object and the object is moved over a distance in the same direction of the applied force is the definition of?
Work is applied to an object and the object is moved over a distance in the same direction of the applied force.
When the area over which a force is applied decreases what increases?
When the area over which a force is applied decreases, the average force applied over said area increases. In other words, the pressure (force/area) increases.
By definition work is a force thats applied over a specific?
By definition, work is a force that's applied over a specific
What is forced applied over a period of time?
Force applied over a period of time has the dimensions of momentum, and is referred to as "impulse".
A method to monitor variance between actual performance and budget is described?
Monitoring income statements is a way that people can monitor variance between actual performance and budget. Managers can be assigned to look over income statements for clients.
What is force applied over a period a time called?
Force applied over a period of time has the dimensions of momentum, and is referred to as "impulse".
