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Design of a Statistical Study
Data Collection
Experimental Design
Sampling Techniques
Levels of Measurment
100
A study in which a researcher doesn't influence the response
What is an Observational study
100
An investigation of one or more characteristics of a population
What is a Survey
100
The variable that occurs when an experiment cannot tell the difference between the effects of different factors on the varible
What is a Confounding variable
100
The difference between the results of a sample and those of the population
What is a Sample Error
100
Data that is categized using names, labels, or qualities
What is the Nominal Level of Meaurement
200
A condition applied to a population during an experiment
What is a Treatment
200
The use of a mathematical or physical model to reproduce the conditions of a situation or process
What is a stimulation
200
A technique where the subjects do not know whether they are receiving a treatment or a placebo
What is a Blinding
200
A sample in which every member of the population has an equal chance of being selected
What is a Random Sample
200
Data that can be arranged in order, or ranked, but differences between data are not meaningful
What is the Ordinal level of Measurment
300
Part of a population when no treatment is applied
What is Control group
300
A subset, or a piece, of a population
What is a Sample
300
The process of randomly assigning subjects to a different treatment group
What is Randomization
300
A count or measure of an entire population
What is a Census
300
Data that can be ordered, and meaningful differences between data entries can be calculated
What is the Interval Level of Measurement
400
A treatment usually given to a control group, but in actuality is fake
What is Placebo
400
An experiment where neither the experimenter nor the subjects know if the subjects are receiving a treatment or a placebo
What is a Double-blind experiment
400
A sample in which each member of the population is assigned a number
What is a Systematic Sample
400
Data similar to data at the interval level, with the added property that a zero entry is a inherent zero
What is the Ratio Level of measurment
500
When a researcher deliberately applies a treatment before observing the responses
What is an Experiment
500
The data collected from observing a sample
What is a Statistic
500
Groups of subjects with similar a=characteristics
What is Blocks
500
When it is important for the sample to have members from each segment of the population
What is a Stratified Sample
500
A zero that implies "none"
What is an Inherent Zero