EPIB301 Final Exam 1 Questions with Correct
Answers
data
pieces of information and may be thought of as observations or measurements
measurement
howe we acquire information on characteristic we wish to study
variable
characteristic we are measuring
value
actual measurement of a varaible
observations
data consists of these units
independent variable
variable we suspect has an affect on dependent variable
dependent variable
variable that is changed due to changes in the independent variable
exposure
independent variable
outcome
,dependent variable
association
relationship between the independent and dependent variable
nominal variables
values fall into unordered categories or classes that have no natural order that can be binary or
multinomial
ordinal variables
has values that can put into a ranked order by preference or amount that has at least 3 values and
the distance between ranks aren't equal
numerical variables
true numeric values that have order and magnitude and separation between points is equal
discrete variables
data you can count which is restricted taking on only specified values (whole numbers)
continuous variables
data you can measure that have infinite possible values
continuous example
length
discrete example
number of children
,ordinal example
education level
nominal example
marital status
categorical data
qualitative data
numerical data
quantitative data
index/scale
different variables can be combined into these
table
arrangement of data into columns and rows
dataset
compilation of each observation and their value for each variable in a table form
data presentation
how you show your data
what can bar charts be used for
better for highlighting differences between groups
, what can pie charts be used for
how each group compares to the total
types of studies
descriptive and comparative studies
types of comparative studies
observational and experimental
descriptive studies
assess the characteristics of a population
comparative studies
relationships between variables in a population
observational
independent variable is not manipulated by the researcher
experimental
researcher manipulates the independent variable of interest
population
group of all subjects about which we want to study and draw inferences
sampling
subset of population of interest
Answers
data
pieces of information and may be thought of as observations or measurements
measurement
howe we acquire information on characteristic we wish to study
variable
characteristic we are measuring
value
actual measurement of a varaible
observations
data consists of these units
independent variable
variable we suspect has an affect on dependent variable
dependent variable
variable that is changed due to changes in the independent variable
exposure
independent variable
outcome
,dependent variable
association
relationship between the independent and dependent variable
nominal variables
values fall into unordered categories or classes that have no natural order that can be binary or
multinomial
ordinal variables
has values that can put into a ranked order by preference or amount that has at least 3 values and
the distance between ranks aren't equal
numerical variables
true numeric values that have order and magnitude and separation between points is equal
discrete variables
data you can count which is restricted taking on only specified values (whole numbers)
continuous variables
data you can measure that have infinite possible values
continuous example
length
discrete example
number of children
,ordinal example
education level
nominal example
marital status
categorical data
qualitative data
numerical data
quantitative data
index/scale
different variables can be combined into these
table
arrangement of data into columns and rows
dataset
compilation of each observation and their value for each variable in a table form
data presentation
how you show your data
what can bar charts be used for
better for highlighting differences between groups
, what can pie charts be used for
how each group compares to the total
types of studies
descriptive and comparative studies
types of comparative studies
observational and experimental
descriptive studies
assess the characteristics of a population
comparative studies
relationships between variables in a population
observational
independent variable is not manipulated by the researcher
experimental
researcher manipulates the independent variable of interest
population
group of all subjects about which we want to study and draw inferences
sampling
subset of population of interest
