biostatistics Flashcards
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study of the collection, organization, analysis, and presentation of data
- including the planning of data collection
- descriptive measure computed from the data of simple
Statistics
can be defined as the application of the mathematical tools to the field of biological science and medicine.
- study of statistics as applied areas.
Biostatistics
the collection, organization, summarization, and analysis of data.
descriptive statistics
drawing of inferences (decision) about a body of data.
inferential statistics
is a scientific
phenomenon of interest.
research study
research study step by step
- planning and designing of experiment or survey
- data collection
- data analysis using statistical tools
- interpretation
- presentation of valid conclusion
3 types of variables
- independent variables
- dependent variables
- control variables
its name suggests, is something that does not vary or change.
- has only one attribute or value
- has no use in statistics.
constant
are numbers which can be obtain from measurements or by counting
Data
what are the sources of data?
- routinely kept records
- surveys
- experiments
- reports
what are the 2 types of data?
- constant
- variables
- a quantity that may vary from object to object
- it takes on different values in different persons, places, or things
variables
- MANIPULATED variable
- the variable you CHANGE
- x- axis
independent variables
variables that need to remain constants for accurate results
control variables
- RESPONDING variable
- the variable you MEASURE
- Y- axis
dependent variable
collection of entities, consist of animals, machines, places, or cells.
- largest collection of values
population
defined simply as a part of a population
sample
2 groups or the 1 group to an external standard
T- test
2 categorical variables
chi square