Vocab

define F test

An estimator whose value approaches the value estimated as the sample size increases

The probability of a type one error

Define relativity efficient estimator:

Range of values of test statistic that shows the difference was due to chance and null hypothesis shouldn't be rejected

Numerical value obtained from a statistical test (observed value minus expected value divided by slandered error)

Standerized distances of population vs sample mean when pop. standard deviation isn't known; comes from normally pop.

The actual probability of getting the sample mean value if the null hypothesis is true

Specific interval estimate determined using data obtained from a sample & the specific confidence level of the estimate

samples in which the subjects are paired or matched in some way

Specific and testable predictive statement about the possible outcome on a particular population

A test used on the hypothesis when the critical region is on the left side of the distribution

The number of values that are free to vary after a sample statistics has been computed; family of curves

A test used on a hypothesis when the critical region is on the right side of distribution

A weighted average of the varience using the 2 sample variances & their respective degrees of freedom as the weights

Define hypothesis testing:

A tested used to examine the differences between categorical variables from a random sample and determine fit

Define independent samples:

Define beta:

Define type one error:

Statistical test for the mean of population, used when the population is normally distrbuted & standered dev. is unknown

A part of a whole, represented by a fraction, decimal, or a percent

A conjecture about the population parameter, which may or may not be true

A range of values used to estimate a parameter

Define estimation:

Probability of rejecting the null hypothesis when it is false

Define critical value:

The distribution of a variable can depart somewhat from normality; valid conclusions can still be obtained

Define assumptions:

Define estimator:

A statistcal hypothesis that states a difference between a parameter and specific value or two parameters

Test that indicates the null hypothesis should be rejected when test value is in either of the two critical regions

test for equality of variances from two normal populations

The error that occurs if you do not reject the null hypothesis when it is false

Statistical test for means & proportions of population, used when pop. is normally distrubuted & standard dev. is known

Maximum probability of committing a type 1 error in hypothesis testing

Test that indicates null hypothesis should be rejected when test value is in critical region on one side of mean

Test that uses data obtained from a sample to make a decision about whether the null hypothesis should be rejected

Confidence level

A set amount allowed for miscalculation

Define point estimate

An estimator who's expected value is equal to the parameter

A set of values for the test statistic for which the null hypothesis is rejected

Statistical hypothesis that says there is no difference in parameter & specific value or no difference in 2 parameters

Continuous distribution with degrees of freedom that skews right with only non negative values