0
The best point estimator of the population mean would be the sample mean.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is one of the best known mechanisms of population control is the relationship?
the best known mechanism of population control is the predator-prey relationship
What does dependent population mean?
those who rely upon the working population. i.e for completion of education we rely upon our father etc.
What is the best function to model population growth?
i guess it depends of the data you have.
How many poplatnm in Ethiopai?
if you mean population, it is around 77m in 2009.
Which of these statements is the best description of the population trend from 2002 to 2012?
The population will increase at a slower rate of growth than the previous 20 years.
Why is the sample mean an unbiased estimator of the population mean?
The sample mean is an unbiased estimator of the population mean because the average of all the possible sample means of size n is equal to the population mean.
Which of the following best describes the condition necessary to justify using a pooled estimator of the population variance?
1- Assuming this represents a random sample from the population, the sample mean is an unbiased estimator of the population mean. 2-Because they are robust, t procedures are justified in this case. 3- We would use z procedures here, since we are interested in the population mean.
What biased estimator will have a reduced bias based on an increased sample size?
The standard deviation. There are many, and it's easy to construct one. The mean of a sample from a normal population is an unbiased estimator of the population mean. Let me call the sample mean xbar. If the sample size is n then n * xbar / ( n + 1 ) is a biased estimator of the mean with the property that its bias becomes smaller as the sample size rises.
Differentiate estimate and estimator?
It can get a bit confusing! The estimate is the value obtained from a sample. The estimator, as used in statistics, is the method used. There's one more, the estimand, which is the population parameter. If we have an unbiased estimator, then after sampling many times, or with a large sample, we should have an estimate which is close to the estimand. I will give you an example. I have a sample of 5 numbers and I take the average. The estimator is taking the average of the sample. It is the estimator of the mean of the population. The average = 4 (for example), this is my estmate.
What is an efficient estimator?
In statistics, an efficient estimator is an estimator that estimates the quantity of interest in some "best possible" manner
What are the properties of good estimators?
There are four main properties associated with a "good" estimator. These are: 1) Unbiasedness: the expected value of the estimator (or the mean of the estimator) is simply the figure being estimated. In statistical terms, E(estimate of Y) = Y. 2) Consistency: the estimator converges in probability with the estimated figure. In other words, as the sample size approaches the population size, the estimator gets closer and closer to the estimated. 3) Efficiency: The estimator has a low variance, usually relative to other estimators, which is called relative efficiency. Otherwise, the variance of the estimator is minimized. 4) Robustness: The mean-squared errors of the estimator are minimized relative to other estimators.
Is sample variance unbiased estimator of population variance?
No, it is biased.
What is the difference a parameter and a statistic?
A parameter is a number describing something about a whole population. eg population mean or mode. A statistic is something that describes a sample (eg sample mean)and is used as an estimator for a population parameter. (because samples should represent populations!)
What is the difference between a parameter and a statistic?
A parameter is a number describing something about a whole population. eg population mean or mode. A statistic is something that describes a sample (eg sample mean)and is used as an estimator for a population parameter. (because samples should represent populations!)
Where could I find a reliable online car payment estimator?
You can find the best online car payment estimator here www.edmunds.com.
Which website offers the best car payment estimator?
There are some websites offering the car payment estimator. You can find an accurate payment estimator at autos.com and other online automotive stores that sell spare parts of auto.
Where can I find a tax return estimator?
The best place to find a tax return estimator is HRBLOCK.com. There are many other websites out there that can calculate this number for you that are accurate.
