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Elementary Statistics Quiz 1
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Terms in this set (36)
_____________________ is the study of how to collect, organizes, analyze, and interpret numerical
information from data.
Statistics
A ____________________________ variable has a value or numerical measurement for which operations such as addition or averaging make sense.
Quantitative
__________________ are the objects described by a set of data: person (animal), place, and thing. In a medical trial, the people in the study referred to as Subjects.
Individuals
A _______________ describes a characteristic of an individual to be measured or observed.
Variable
The following has what level of measure?
Age
Ratio
_________________________________ Statistics involve methods of using information from a sample to draw conclusions regarding the population.
Inferential
A ____________________________ variable describes an individual by placing the individual into a category or group.
Qualitative
Population is to sample as _______________________ is to sample survey.
census
Unlike a simple yes/no response, a _________________ _________________ provides a scale that represents an ordinal scale such as Poor, Fair, Good, and Excellent.
likert scale
A sampling technique such that every seventh car is pulled over for a sobriety test.
Systematic
Population is to sample as _________________________ is to statistic.
parameter
A study consisting of all 150 members of a brain trust showed an average IQ of 137. This is an example of a:
parameter
A study consist of seventy-five patients with lung cancer shows an average survival time of 5.2 years. This is an example of a:
statistic
The following has what level of measure?
gender
nominal
The following has what level of measure?
ranking of candidates by preference
ordinal
The following has what level of measure?
thermometer setting
interval
A sampling technique such that the sampling frame is first divided into groups based on gender and then random samples are taken from each group.
Stratified
A ________________________ is a numerical facsimile or representation of a real-world phenomenon.
simulation
________ is a consistent, repeated deviation of the sample statistic from the population parameter in the same direction when many samples are taken.
bias
A sampling technique such that each individual is equally likely to be selected as well as any group of size n is equally likely to be selected.
simple random sample
A sampling technique such that the sampling frame is arbitrarily divided into regions by state lines.
cluster
__________________ describes the spread in the values of the sample statistic when many samples are taken.
variability
The following is an example of what type of measure?
Heart beats per minute; that is, the number of times your heart beats in a sixty-second time interval
discrete
The following is an example of what type of measure?
Length of a track
continous
A study such that a treatment is deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured
experimental
__________ variable is a variable that has an important effect on the response variable and the
relationship among the variables in a study but is not one of the explanatory variables studied either
because it is unknown or not measured.
lurking
One principle of Experimental Design is that a group that receives a dummy treatment (possibly a placebo) should be used to allow for comparisons and enables researches to account for the placebo effect. Also used to detect lurking variables and confounded variables.
control
A person takes an AIDS tests in which no personal information is given, but rather they are assigned a ten-digit code that they will use to obtain the results. This is an example of
Anonymity
A _____ measure is one that is relevant or appropriate as a representation of that property. Otherwise, this measure is invalid.
valid
A study such that variables or measurements of individuals are conducted in a way that doesn't change the response of the variable being measured
observational
Variables which explain the subject response are called ___________ variables.
explanatory
The ________ variable is the primary variable of interest
response
Two variables such that their effects on the response variable cannot be distinguished from each other.
confounded
An experiment in which neither the subjects nor the people who work with them know which treatment each subject is receiving
double blind
The _________ __________ occurs when a subject receives no treatment, but (incorrectly) believes he or she is in fact receiving treatment and responds favorably.
placebo effect
A __________ is any specific experimental condition applied to the subjects.
treatment
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