Share
Explore BrainMass

Variation in Population Sampling

Can you help me with some True / False questions on statistics? I think I am reading too much into the question for True / False.

*Variation in the population has little if any effect on the amount of sampling that will be experienced?

*Parameters are numbers that can be used to describe characteristics of population?

*Values in a basic frequency tables are directly affected by the size of the sample?

*The most common measure of the center value of a set of data is the sample mean?

*The mean and the median are possible point estimators but the mode is not?

*Because population parameter values are usually known, point estimates are seldowm used to measure them?

*Two fair coins are tossed at the same time. The probability that both show heads is 0.5?

Solution Preview

Hi,

Please see response to your posting as follows.

*Variation in the population has little if any effect on the amount of sampling that will be experienced?
--> False: Variation in the population affects amount of sampling. More the variation in the population larger sample size is required to achieve desired confidence level. Also, the samples drawn from a polulation with larger variation tend have difference in variance whereas population with smaller variance would tend to have homogenous samples in terms of variance.

*Parameters are numbers that can be used to ...

Solution Summary

Solution contains answers and explanation of multiple choice questions.

$2.19