Asked in Math and Arithmetic, Statistics, Probability
When a coin is tossed four time then mean and variance of the number of the head?
Mean = 2. Variance = 1.
Asked in Trees
How do you estimate the narrow sense heritability based on the halfsib offspring of open pollinated trees?
First we need to calculate within and between family variance components for half sib families. Additive variance is equal to 4 time the additive variance and Dominance variance equal to within family variance - (3/4) additive variance. ...
Asked in Chemistry, Statistics, Manufacturing
Is idle capacity variance due to an increase or decrease in the volume of production?
"http://wiki.answers.com/Q/Is_idle_capacity_variance_due_to_an_increase_or_decrease_in_the_volume_of_production" "http://wiki.answers.com/Q/Is_idle_capacity_variance_due_to_an_increase_or_decrease_in_the_volume_of_production" ...
What difference between a favorable variance and an unfavorable variance?
Favourable variance is that variance which is good for business while unfavourable variance is bad for business ...
Asked in Financial Statements, Personal Finance
What is the difference between negative price variance and volume variance?
Negative price variance is when the cost is less than budgeted. Volume variance is a variance in the volume produce. ...
What factors causes Budget Variance?
There are 7 variances associated with a budget ( which are generally calculated for controlling purposes) 1- Material Price variance 2- Material Quantity variance 3- Labor rate variance 4- Labor efficiency variance 5- Spending variance 6- Efficiency variance 7- Capacity variance ...
Asked in Math and Arithmetic, Proofs, Probability
How do you calculate the mean and variance of a poisson distribution as a function of time t?
Divide the total number of incidents by the total time. The result, representing the average number of incidents per unit of time, is the mean as well as the variance of the Poisson distribution. ...
Asked in Engineering, Definitions
What is idle time and what are its causes?
Generally idle time means that time for which the employer pays, but from which he obtains no production. Otherwise it is the difference between the time for which workers are paid but the workers do not work. So it is a loss to the organisation. It can be minimized but, cannot be controlled during idle time, the workers remain due and contribute nothing towards production. It is the difference between actual hour and actual hour worked. There are two types of idle...
Asked in Algebra, Scientific Notation
trying to find the variance of 10-6 divided by 6 square 2?
A single number cannot have a variance. A single number cannot have a variance. A single number cannot have a variance. A single number cannot have a variance. ...
Asked in School Subjects, Math and Arithmetic
What is Proportion of variance unaccounted?
The unaccounted for variance aka Error Variance, is the amount of variance of the dependent variable (DV) that is not accounted for by the main effects/independent variables (IV) and their interactions. ...
Asked in Sales and Customer Service
Describe a time when you had to identify a customer's need?
Describe a time when you had to identify a customer's need
Asked in Math and Arithmetic, Business Accounting and Bookkeeping, Statistics, The Difference Between
What is a difference between a pooled variance and a combined variance?
Pooled variance is a method for estimating variance given several different samples taken in different circumstances where the mean may vary between samples but the true variance (equivalently, precision) is assumed to remain the same. A combined variance is a method for estimating variance from several samples, given the size, mean and standard deviation of each. Mathematically, a combined variance is equal to the calculated variance of the set of the data from all samples. See links. ...
What is the Direct labor efficiency variance formula?
(actual time * standard rate) - (standard time * standard rate)