# Statistics Test 1

Home > Preview

The flashcards below were created by user nharris1 on FreezingBlue Flashcards.

1. Sampling Error
Discrepany that exisits between a smaple statistic and the corresponding populatino paramenter
2. Experiment
manipulate a varaiable
3. Correlational Study
Measures two different variable to see if there is a relationship between them.
4. Independent variable
The varible that is manitpulated
5. Dependent Variable
Is the varable observed to assess the effect of a treatment
6. discrete variable
Separate categories. Whole Numbers.
7. continuous variable
infinite number of possible values
8. Nominal Scales
Consists of a set of categories that have different names.
9. Ordinal Scale
Consists of a set of categories that are organized in an ordered sequence.
10. Interval Scale
Consists of categories with exactly the same size intervals. Zero is abritary.
11. Ratio Scale
Same as interval but zero is the bottom.
12. Positive Skew
Where the majority of the Data is on the left
13. Negative Skew
where the majority of the Data is on the right
14. Sample
sert of individuals selected from a apopulation, ussally to represent the population.
15. Cardinality
# of objects in a set
16. Formula for Z- Score and what the variable stand for.
Z= [X - (MUE)]/(sigma)

• X = value given or reequest to find
• MUE = Average
• Sigma = Standard diviation
17. Statistic
is a value that describes a sample
18. parameter
is a value that describes a population
19. The central tendency of a set of measurements is a
single score that represents the center of the distribution.
20. What does variablity measure?
How far values tend to be from the central tendency.

### Card Set Information

 Author: nharris1 ID: 175449 Filename: Statistics Test 1 Updated: 2012-10-04 15:07:14 Tags: Statistics Test Folders: Description: Statistics Test 1 Show Answers:

What would you like to do?

Home > Flashcards > Print Preview