Lecture 7 – Research 3/8/2012 12:34:00 PM
-There are factors on all of the designs can play the validity of a study
-Is my study confoundable, am I missing an important consideration?
Confound = any variable that varies with independent variable that
could potentially provide a different explanation of your results
-confounding variables come from different places
**confounding can occur if the independent variable is not defined
Descriptive Statistics vs. Inferential Statistics
-Best way to describe a data depends on the data
Descriptive statistics includes collecting, organizing, summarizing,
and presenting data.
Inferential statistics is when we “make inferences”, do hypothesis
testing, determine relationships, and make predictions.
sample has to be representative of the larger population
-self selection bias
whenever you recruit participants
Hite – 90% of married feel emotionally neglected in their marriage
o –criticized her survey was sent out to select women
o 4.5% was returned
must make sure various groups within your population has been