Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
Parameter
-definition- |
Numerical description of a POPULATION
|
|
|
Statistics
-definition- |
Numerical description of a SAMPLE
|
|
|
Representative sample
-definition- |
mirrors population from which it was drawn
|
|
|
EPSEM
Equal probability of selcetion methods |
Each member of the population has an equal probability of being selected
|
|
|
Probability
-definition- |
Mathematical likelihood that an event will occur
|
|
|
To determine tthe probability of Event A OR Event B you need to...
|
add (+)the probability fractions together
|
|
|
To determine tthe probability of Event A AND Event B you need to...
|
multiply (*)the probabilty fractions
|
|
|
Odds
-definition- |
Changes against an event occuring
|
|
|
Odds is ddetermined by...
|
Subtracting the numerator in the probability fraction from the denominator
(1/4)...4-1=3...3 chances in 4 of not selecting a client |
|
|
Sampling distribution
-definition- |
Theoretical frequency distribution of a sample statistic
|
|
|
Central Limit Theorem
-definition- |
The sampling distribution of themeans becomes more normal with the increase in the sample size
|
|
|
Unibased Estimator
-definition- |
Statistic that doesn't underestimate or overestimate its corresponding parameter
|
|
|
Consistent Estimator
-definition- |
Statistic that tends to get close to the value of the parameter as the sample size increases
|
|
|
Efficient Estimator
-definition- |
Statistic with a small standard error
|
|
|
Interval Estimation
-definition- |
Delineate a range of values wherein the targeted population parameter is expected to fall
|
|
|
Confidence Interval
-definition- |
A range of scores around a point estimate that says how much you are willing to risk that the parameter is in the interval
|
|
|
Alpha
-definition- |
The risk factor
The probability of error |
|
|
Most common alpha is...
|
.05
|
|
|
t-distributions
-definition- |
bell-shaped, symmetrical with a mean of 0
|
