Term
| 2 Characteristics that differenciate experiemental method from others |
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Definition
- Manipulation - one variable is manipulated while other is observed for change due to manipulation of 1st
- Control - must have control over research situation to avoid extraneous variables influencing relationships being examined
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Term
| Two types of data structures |
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Definition
- Correlational method - measures two variables and portrays their relationship (does not explain
- Experiemental method - demonstrates cause and effect of relationship between two variables
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Term
| Three basic techniques used to control other variables in experiemental method |
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Definition
- Random assignment - ensures equal chance of being assigned to whatever treatment condition
- matching variables - ensures equivalent grups or equivalent environments (ie each group has 60% femes & 40% males)
- Holding variables constant - ie only using 10yr old participants to ensure equal age range
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Term
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Definition
| Something that can change or have different values |
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Term
| Term to describe measured variables |
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Definition
Datum
Score
Raw Score
(singular) |
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Term
What term describes a complete set of scores?
(regarding variables) |
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Definition
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Term
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Definition
| Characteristic that describes a population |
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Term
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Definition
Characteristic that describes a sample
ie, the average score for a sample is a statistic, or characteristic of a sample |
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Term
| What are the two general categories for statistical procedures? |
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Definition
- Descriptive statistics - deals with explaining variables of a sample; summarizes data
- inferential statistics - uses sample data to make statements about a population
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Term
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Definition
| Discrepancy between sample statistics and corresponding population parameter |
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