Hypothesis Testing
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 standard deviations a particular score is away from the mean.
What is a z score?
Symbol used to denote the number of participants in each SAMPLE group in an independent samples t-test.
What is n? (NOT N)
The stability or consistency of a measure.
What is reliability?
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Who is Peter?
Experimental decision that is made when there is a change in the hypothesized direction.
What is to reject the null?
The mean of the z-distribution
What is 0?
The full or alternative name for the any of the t-tests.
What is Student's t-test?
The likelihood that inferences made in one study can be generalized to other times, samples, populations, etc.
What is external validity?
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Who is Kourtney?
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 common alpha level used.
What is .05?
The difference between z-tests and one-sample t-tests, is that we're missing this piece of information.
What is the standard deviation of the population (sigma)?
The level of confidence with which we can infer causal relations between variables in a research study.
What is internal validity?
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Who is Patrick Mahomes II?
This is a false positive, or the rejection of H0 when it’s true.
What is a Type I error?
The basic assumption of all parametric tests (including z-tests).
What is normality (a normal distribution of population scores)?
When your |tobt| > |tcrit|, you would make this statistical decision (related to your non-directional hypothesis).
What is Reject H0?
Random assignment to treatment group is one way to increase this.
What is internal validity?
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What is the Earth's gravitational pull on February 10th?
Hypothesis testing prioritizes preventing this type of error.
What is a Type I Error?
The unit normal table typically contains at least these three columns.
What is z score, area between mean and z, and area beyond z in tail.
t represents a family of distributions based on this. (i.e., there is a different t-distribution for each _____)
What is degrees of freedom (or sample size)?
Laboratory experiments are typically associated with higher _____ validity, while field experiments typically have higher ______ validity.
What is internal; external?
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What is a standard poodle?