The science of collecting, organizing, analyzing, and interpreting data in order to make decisions
What is statistics?
100
Descriptive statistics and Inferential Statistics
What are the two branches of statistics?
100
Qualitative data only
Categorized using names, labels, or qualities
No mathematical computations can be made
What is Nominal Data?
100
Occurs when an experimenter cannot tell the difference between the effects of different factors on a variable
What are Confounding Variables?
100
these are the statistics you find when you meet a new set of numerical data?
mean, standard deviation
200
The collection of all outcomes, responses, measurements, or counts that are of interest
What is a population?
200
Involves using sample data to draw conclusions about a population
What is Inferential Statistics?
200
Qualitative or quantitative data
Data can be arranged in order
Differences between data entries is not meaningful
What is Ordinal Data?
200
A subject reacts favorably to a placebo when in fact he or she has been given no medical treatment at all
What is the Placebo Effect?
200
A variable that cannot be assigned a numerical value, just a description
What is a categorical variable?
300
A number that describes a population characteristic.
What is a parameter?
300
Consists of attributes, labels, or nonnumerical entries
What is qualitative data?
300
Quantitative data
Data can be ordered
Differences between data entries are meaningful
Zero represents a position on a scale (not an inherent zero – zero does not imply “none”)
What is Interval Data?
300
experiment neither the subject nor the experimenter knows if the subject is receiving a treatment or a placebo
What is a Double-Blind Experiment
300
These types of data take on numerical values for which arithmetic operations such as adding and averaging make sense.
What is a quantitative variable?
400
A number that describes a sample characteristic
What is a statistic?
400
Numerical measurements or counts
What is quantitative data?
400
Similar to interval level
Zero entry is an inherent zero (implies “none”)
A ratio of two data values can be formed
One data value can be meaningfully expressed as a multiple of another
What is Ratio Data?
400
a process of randomly assigning subjects to different treatment groups
What is Randomization?
400
This type of data analysis fits a line to a scatterplot
What is linear regression? (Or the least squares regression)
500
Involves organizing, summarizing, and displaying data
What is descriptive statistics?
500
This method of data gathering consists of watching a group of individuals to gain information rather than manipulating a variable or variables in an experiment.
What is an observational study.
500
A treatment is applied to part of a population and responses are observed
What is an Experiment?
500
the repetition of the basic experiment.
What is Replication?
500
Produces answers to specific questions with a level of confidence that the answer is correct. (using stats to predict the future)