Week 7: Quantitative Research Designs & Descriptive Statistical Methods Flashcards
causality does not ….
equal causation
what are the three study designs
Experimental
Non experimental
Quiasi
what is the criteria for causality
Temporal
Relationship
No confounders
what type of statistics are used to describe and synthesize the data
descriptive statistics
percentages are ____
descriptive statistics
four levels of measurements
nominal
interval
ratio
ordinal
what is the lowest level of measurement
nominal measurement
what type of level of measurement involves signing numbers to classify characteristics into categories
nominal
example of nominal
married = 1
not married = 2
ordinal measurement is _____
sorting people based on their relative ranking on an attribute
Attributes are ordered according to some criterion.
ordinal measurement
what type of measurement captures not only equivalence but also relative rank
ordinal measurement
what does ordinal measurement not do
does not, however, tell us anything about how much greater one level is than another
when researchers can assume equivalent distance between rank-ordering on an attribute it is __
interval measurement
an example of interval measurement is ___
fahren height temp scale
what type of measurement is the body mass index
ratio
number of fast food restaurants within a mile of the veterans’ house (0-1, 1-4) is what type of level of measurement
ordinal
mutually exclusive categories / groups =
nominal
ranked groups =
ordinal
equal numerical distance between points on a scale =
interval
interval level data which has a true zero =
ratio
the most frequent value is also known as
mode
the midpoint is also known as
median
the average is also known as
mean
in what type of studies do researchers uses interventions to bring about desired effect
experimental and quasi experimental
an experiment is also called
randomized control trial (RCT)
an experiment is characterized by three properties which are:
- manipulation
- control
- randomization
