week 9 Flashcards
self selection bias
- results of people who are more likely to reply are reported and imply that those results are valid
response acquiescence
- tendency to agree with statements
what is the option of dont know refered to as
DK alternative
double barreled question
- asks for two responses at once
survey biases
- double barreled question
- leading question
- response acquisition
tips abt wording questions
- avoid jargon
- complete sentences
- positive/neutral phrased questions
- unbiased/balanced wording
- no aberrations/slang
social desirability bias
- ppl answering how they think they should respond not how they actually feel
types of surveys
- inperson interview
- mail writen surveys
- phone surveys
- online surveys
correlation coefficient scale
- +1= perfect positive correlation
- 0 = no correlation
- -1 = perfect negative correlation
- closer the coefficient is to one the stronger the relationship
coefficient of determination
- square of pearson’s r
- always positive
regression analysis
- predictions based off of correlations
regression line
- makes predictions
- line of best fit
- best summarization of points on a scattrerplot
in regression analysis, regression equation is used to predict value for Y based on given value of X. Y is referred to as _____ variable and X the ____ variable
Criterion, predictor
what is the equation showing:
Y=a+b1X1 +b2X2 +…+bnXn
multiple regression analysis
what is the problem where the correlation could be either way
directionality problem
cross lagged panel correlation
- investigates direction of correlational study at several points in time to clarify directionality
mediating variable
- explains how or why a relationship exists between two variables
moderating variable
- explains under what condition relationships between two variables exists