Graphs & Visualization
This word means "count" or "tally" in statistics.
What is frequency
A number with a true zero.
What is ratio level data?
Organizes, summarizes and displays data
What are descriptive statistics
The extent to which a measurement instrument produces consistent results.
What is reliability
This type of table displays how often each value or category appears in a dataset.
What is a frequency table
Rank-ordered groups like: never, sometimes, always
What is ordinal level data?
Uses data to make predictions about the larger population
What are inferential statistics
The primary purpose of an experimental or quasi-experimental design is to
Infer causality
Uses vertical bars that don't touch showing the percentage of cases for each category of the variable.
What is a bar graph
Max - Min
What is range.
Categories of data like race: Black/African American, Latino/a, Asian, White, Other
What is nominal?
There is no relationship between the variables
What is the null hypothesis
Selecting a subset to represent a larger population.
What is sampling
Graph of single points rather than bars.
What is a frequency polygon or line graph
A number without a true zero, like IQ or SAT score.
What is interval level data?
Chi-square, t-test, ANOVA, correlation
What are statistical tests
This statement gives potential participants essential information to decide whether to join a study.
What is an informed consent statement
Bars that touch each other representing quantitative increments from one bar to the next.
What is a historgram
Where the data tend to fall
What is central tendency
When a ratio level variable is changed to be nominal level
What is transforming a variable
The mean, median and mode are in the middle of this graph
What is a normal distribution
This committee reviews research proposals to ensure the protection of human participants
What is the IRB (Institutional Review Board)