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Math 4 Unit 3 Vocabulary
Math 4 Unit 3 Vocabulary
10
Mathematics
12th Grade
07/27/2012

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Term
point estimate
Definition

a single value estimate for a population parameter.

 

 

 

Term
interval estimate
Definition

a range of values used to estimate a population parameter.

 

 

 

Term
confidence level
Definition

the probability that the interval estimate contains the population parameter. 

 

Term
critical values
Definition

factors used to compute the margin of error; can be a z-score or a t-score

 

 

 

Term
confidence interval
Definition

term used in statistics that measures the probability that a population mean will fall between two set values; can take any number of probabilities, with the most common being 95% or 99%.

 

Term
margin of error
Definition

expresses the maximum expected difference between the true population parameter and a sample estimate of that parameter

Term
Central Limit Theorem
Definition

 

If samples of size n, where n > 30, are drawn from any population with a mean m and a standard deviation s, then the sampling distribution of sample means approximates a normal distribution with mean (mu)and standard deviation  (sigma/sqrt(n))regardless of whether the original population was normally distributed or not.

 

 

 

Term
sampling distribution
Definition

 

describes how [x-bar]varies in all possible samples from the population

 

 

 

Term
standard error for proportions
Definition

measure of the variability of a statistic;  an estimate of the standard deviation of a sampling distribution

Term
standard deviation for means
Definition

a numerical value used to indicate how widely individuals in a group vary

 

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