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Statistics For Engineers Final
Vocab review of entire class
42
Mathematics
Undergraduate 2
05/06/2009

Additional Mathematics Flashcards

 


 

Cards

Term
Random Sample
Definition
Every subset of population has equal likelihood of being selected
Term
Relative Frequency
Definition
The relative frequency of an event is the proportion of the times the event occurred in a series of trials of a random experiment
Term
Statistic
Definition
Any function of the sample data
Term
Parameter
Definition
Any function of the population data
Term
Estimator
Definition
A statistic used to estimate population parameter
Term
Unbiased Estimator
Definition
One that is equal to the population parameter
Term
Population
Definition
Set of all objects of interest
Term
Sample
Definition
Any subset of the population, you want it to be representative of the population
Term
Measures of location
Definition
Mean, median, mode
Term
Measures of Dispersion
Definition
Variance, range, standard deviation
Term
Measures of Relative Standing
Definition
Standard scores, percentiles
Term
Descriptive Statistics
Definition
Describe the sample
Term
Inferential Statistics
Definition
Infer something about the population
Term
Experiment
Definition
Random process that results in one of several outcomes
Term
Sample Space
Definition
Set of all possible outcomes of a probability experiment
Term
Event
Definition
Any subset of the sample space
Term
Event Complement
Definition
Every outcome not in the event
Term
Independent Events
Definition
The probability of one event does not affect the other
Term
Conditional Probability
Definition
Probability of B given that A has occured
Term
Probability Distribution
Definition
For a sample space, a description of the set of possible outcomes along with a method to determine probabilities.
Term
Random Variable
Definition
A function that assigns a real number to each outcome in the sample space of a random experiment
Term
Bernoulli Trial
Definition
Sequence of independent trials that have exactly two outcomes and the probability of success remains constant
Term
Binomial
Definition
A discreet random variable that equals the number of successes in a fixed number of Bernoulli trials
Term
Geometric
Definition
A discreet random variable that is the number of Bernoulli trials until a success occurs
Term
Negative Binomial
Definition
A discreet random variable that is the number of trials until a specified number of successes occur in Bernoulli trials
Term
Hypergeometric
Definition
A discreet random variable that is the number of successes obtained from a sample drawn without replacement from a finite population
Term
Poisson Process
Definition
A random experiment with events that occur in an interval to satisfy the following assumptions. The interval can be partitioned into subintervals such that the probability of more than one event in a subinterval is zero, the probability of an event in a subinterval is proportional to the length of the subinterval, and the event in each subinterval is independent of other subintervals.
Term
Poisson Distribution
Definition
A discreet random variable that is the number of events that occur in a Poisson process
Term
Uniform
Definition
Refers to either a discrete or continuous uniform random variable
Term
Normal Random Variable
Definition
A continuous random variable that is the most important one in statistics because it results from the central limit theorem
Term
Central Limit Theorem
Definition
The sum of n independently distributed random variables will tend to be normally distributed as n becomes large
Term
Gamma
Definition
A random variable that generalizes an Erlang random variable to noninteger values of the parameter r
Term
Erlang
Definition
A continuous random variable that is the sum of a fixed number of independent, exponential random variables
Term
x-bar
Definition
sample mean
Term
s
Definition
sample standard deviation
Term
alpha
Definition
Probability of Type 1 error
Term
beta
Definition
Probability of type 2 error
Term
mu
Definition
Population mean
Term
sigma
Definition
Population standard deviation
Term
pi
Definition
3.14159265
Term
P(A|B)
Definition
P(A)+P(B)-P(AnB)
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