STATS 7

In order to apply the Central Limit Theorem for Sample Proportions, the sample size must be large enough that the sample expects at least ____ successes and ____ failures

10, 10

A _______ is a survey in which every member of the population is measured.

Census

_________ Bias comes from asking questions that do not produce a true answer. -Confusing wording, misleading questions

Measurement

In a confidence interval, the margin of error provides information about how far the estimate is from the _______________.

population value

To create a confidence interval for a proportion population, one should add and subtract the margin of error to/from the ___________.

sample proportion

The confidence level measures the _______ rate of the method of finding confidence intervals.

success

Statistical inference always involves ________, so an important component of this science is measuring our uncertainty.

uncertainty

To keep track of parameters and statistics, parameters are represented by Greek characters while statistics are represented by _____________.

English letters

What are statistics sometimes called?

Estimators

-Bias is a measure of the _______. -Standard Error is a measure of _______.

-accuracy -precision

If it is being used to make an inference about a population, a good statistic should be ______ and ______.

-accurate -precise

The bias of a sampling distribution is measured by computing the distance between the _______ of the sampling distribution and the _________ parameter.

-center -population

What is an important difference between statistics and parameters? Statistics are _________, but parameters are typically _________.

-known -unknowable

-The _____ of all sample proportions always equals the population proportion. -The standard error will be _____ for larger sample sizes.

-mean -smaller

The symbol u represents a _________ and the symbol x (with a bar over it) represents a _________. -the mean is represented by _____

-parameter -statistic -x with a bar over it

A parameter is the measure of the __________ and a statistic is a measure of a ___________.

-population -sample

When applying the Central Limit Theorem for Sample Proportions, the value of the sample _______ can be substituted for p when calculating the standard error if the value of p is _______.

-proportion -unknown

A _________ is a numerical value that characterizes some aspect of the population.

Parameter

A ______ is a collection of people or objects taken from the population.

Sample

_______ Bias results from taking a sample that is not representative of the population. -Convenience sampling and voluntary response sampling

Sampling

______________ Sampling, SRS, involves randomly drawing people from the population without replacement. -If a scientific sampling technique is not done, we cannot learn anything about the population by looking at the sample data.

Simple Random

A _______ also called an Estimator is a number derived from the data.

Statistic

A method is called _______ when it has a tendency to produce an untrue value.

biased

Increasing the level of ________ increases the margin of error, and visa versa.

confidence

Statistical _______ is the art and science of drawing conclusions about a population on the basis of observing only a small subset of that population.

inference

To measure the quality of a survey, statisticians evaluate the ________ used for the survey.

method

What is a numerical value that characterizes some aspect of a population?

parameter

The _________ is the group of people or objects we wish to study.

population

What is the term for a group of objects or people to be studied?

population

When taking samples from a population and computing the proportion of each sample, the ________ proportion values are always the same.

population