Exam 6: Foundations of Statistical Inference

The level of random sampling error in a study is directly related to the ______ in the population characteristic.

The interval within which 95 percent of all possible sample estimates will fall by chance is defined as ______.

The standard error of a sample mean is synonymous with random sampling error.

The idea that an infinite number of samples drawn from a population will have normally distributed means is called the central limit theorem.

Random sampling error is defined as the extent to which a sample statistic differs from a population parameter by ______.

A public opinion poll reporting the president's job approval rating is an example of a ______.

Many of the variables of interest to political researchers are not measured at the nominal level.

The magnitude of random sampling error in a study depends upon the ______ of a sample and the amount of ______ in the population characteristic being measured.

In a normal distribution the portion of the curve above 1.96 standard errors is ______.

A ______ allows the researcher to obtain measurements for all members of a population.

In statistical notation, the letter n refers to the ______.

The larger the sample size, the lower the degrees of freedom, the more relaxed the t distribution.

The average amount given to a political candidate is an example of a ______.

In statistical notation, the symbol σ refers to the ______.