Lecture 3 Flashcards
What is reliability in research?
Same participant will get same score across multiple testings
What does validity refer to in research?
Testing what you think you are testing
What is necessary for a test to be considered valid?
Have to have reliability to be valid
What does internal validity measure?
How much control the researcher has over the study
What is external validity?
How similar study is to the real world
What is standardization in research?
Creating a procedure to assure consistency in how the study is run
What is norming in research?
Determining where the cutoffs are for your results
What is the difference between a sample and a population?
- Sample - participants
- Population - who research is applicable to
What does WEIRD stand for?
Western, educated, industrialized, rich, democratic
What is self-selection bias?
People select themselves for studies
How does replication affect bias?
Replication decreases bias
What do descriptive statistics do?
Describe what our data looks like, mean median mode
What do inferential statistics tell us?
Tells if your data is significant
What is a T-test used for?
Comparing 2 groups
What does F-stat measure?
More than 2 groups
What is a P value?
Probability value indicating significance
What is the range of correlation strength?
-1 to 1
How does correlation strength relate to distance from zero?
Correlation further from 0, stronger
What does positive correlation indicate?
Increasing relationship
What does negative correlation indicate?
Inverse relationship
What characterizes a normal distribution?
Mean, median, mode nearly the same
What is a positive skew?
Majority of data are on lower end of the scale
What is a negative skew?
Majority of data are on high end of scale
What does effect size measure?
How strong the effect is between variables