Scales of Measurement
The scale of measurement used to describe the state you were born in.
What is nominal?
The stability or consistency of a measure.
What is reliability?
Term used to describe when two outcomes cannot occur together.
A statement about the population that we wish to test and states that there has been no change, or that an effect is zero.
What is the null hypothesis?
The number of individuals in the sample.
What is N?
The scale of measurement used to describe students' class standing in college (e.g., sophomore, senior)
What is ordinal?
The likelihood that inferences made in one study can be generalized to other times, samples, populations, etc.
What is external validity?
Term used to describe when the sum of the probability of either of two outcomes is 1.
What is complementary (or exhaustive)?
Experimental decision that is made when there is a change in the hypothesized direction.
What is to reject the null?
The mean of the population
What is mu?
What is interval?
The level of confidence with which we can infer causal relations between variables in a research study.
What is internal validity?
Theoretical sampling distribution that summarizes a population in which scores are symmetrical around the mean.
What is the normal distribution?
This type of test includes values that differ in one direction from the null hypothesis value. For example, H1: m > 50.
What is a one-tailed/directional test?
The variance in a sample
What is s2 ?
Scale of measurement used to describe the time (in seconds) it takes a driver to make a left hand turn after a traffic light turns green.
Random assignment to treatment group is one way to increase this.
What is internal validity?
The difference (in the denominator) between population standard deviation and sample standard deviation.
What is N-1 (for sample) and N (for population)
This results from a decision to reject H0, when in reality H0 TRUE.
What is a Type I error?
The number of individuals in one group of the study.
What is n?
This feature distinguishes between interval and ratio level data.
What is an absolute/true zero point?
Even if lab experiments do not resemble situations a participant would encounter in the "real world", they may still recreate the mental/psychological states that would be experienced in the "real world." The term used to describe this is....
What is experimental realism?
Official term to describe the standard deviation of the sampling distribution.
What is the standard error of the mean?
Hypothesis testing prioritizes preventing this type of error.
What is a Type I Error?
The standard error of the mean of the a given sample
What is sM (or s sub x-bar) ?