Bio Stats mini exam 1 with verified answers
already passed
1. —Know the two basic
Does variable X ditter between groups in space or in
types of research
questions
time? What is the ettect of variable Y on
2. —Know the differences variable X?
be- tween manipulative
manipulative studies- where we (the researchers) alter one
studies, observational
or
studies, and natural
more variables and then determine how members of our
experiments
group(s) respond to these changes.
observational studies- we do not manipulate variables,
but in- stead record ettects on our groups under
"natural"conditions natural experiments- Natural
experiments are observational stud- ies in which we make
3. —Know the difference use of natural "manipulation" of some variable to study
be- tween the three the ettects of this ditterence in our study system
types of variables:
continuous, dis- crete, continuous: one that can assume any value
and categorical discrete: one that can assume only certain values, in
particular integer values
categorical: one that can assume only certain values, in
4. —Know the difference particular integer values
be- tween explanatory
variables and response explanatory: one that we think causes an ettect
variables response: one that we think is attected by the explanatory
variable
5. —Know the difference
be- tween a population
and a sample, and how population: all of the subjects in an area
to random- ly sample sample: a portion of the population
populations
1/
13
, Bio Stats mini exam 1 with verified answers
already passed
6. —Know the basic ideas relat- every member of the sample has a known or equal
chance of ed to random assignment of being placed in a control group or an
experimental group replicates to treatments
7.
2/
13
already passed
1. —Know the two basic
Does variable X ditter between groups in space or in
types of research
questions
time? What is the ettect of variable Y on
2. —Know the differences variable X?
be- tween manipulative
manipulative studies- where we (the researchers) alter one
studies, observational
or
studies, and natural
more variables and then determine how members of our
experiments
group(s) respond to these changes.
observational studies- we do not manipulate variables,
but in- stead record ettects on our groups under
"natural"conditions natural experiments- Natural
experiments are observational stud- ies in which we make
3. —Know the difference use of natural "manipulation" of some variable to study
be- tween the three the ettects of this ditterence in our study system
types of variables:
continuous, dis- crete, continuous: one that can assume any value
and categorical discrete: one that can assume only certain values, in
particular integer values
categorical: one that can assume only certain values, in
4. —Know the difference particular integer values
be- tween explanatory
variables and response explanatory: one that we think causes an ettect
variables response: one that we think is attected by the explanatory
variable
5. —Know the difference
be- tween a population
and a sample, and how population: all of the subjects in an area
to random- ly sample sample: a portion of the population
populations
1/
13
, Bio Stats mini exam 1 with verified answers
already passed
6. —Know the basic ideas relat- every member of the sample has a known or equal
chance of ed to random assignment of being placed in a control group or an
experimental group replicates to treatments
7.
2/
13
