Experimental Research
- explores cause and effect relationships
- independent variable - manipulated
- dependent variable - changed
Experimental and Control Groups
- Experimental Groups - exposes participants to the treatment
- Control Groups - comparison for evaluating effect
Experimental Method
- Blind Study - subjects are unaware if assigned to control group or experimental group
- Double Blind Study - neither subjects or researchers know which group is control or experimental
Descriptive Statistics and Inferential Statistics
- Descriptive Stats - describe the result of the research
- Inferential - used to make an inference or draw a conclusion beyond the raw data
Measures of Central Tendency
- Central Tendency - where does the center of the data tend to be?
- Mode - most frequently occurring score in a distribution
- Mean - average of scores in distribution
- Median - middle score in rank order distribution
- Range - difference between high and low scores in a distribution
- Standard Deviation - computed measure of how much scores vary around the mean
Like the structure and the organization of your notes. Some extra information you could have put is the types of standard deviation. High standard deviation means the scores are spread out, and low standard deviation means the scores are close together.
ReplyDeleteTo better understand inferential and descritive statistics, examples would help. Like for descrptive, "400 voters were surveyed by phone on October 20. Of these, 230 said they would vote for Obama." For inferential, "Obama will win the election."