Hypothesis Testing
Hypothesis Testing with z-tests
t-tests
Reliability & Validity
Current Events
100

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?

100

The number of standard deviations a particular score is away from the mean. 

What is a z score?

100

Symbol used to denote the number of participants in each SAMPLE group in an independent samples t-test.

What is n? (NOT N)

100

The stability or consistency of a measure.

What is reliability?

100

This year's eligible gent on the current season of the Bachelor.

Who is Peter?

200

Experimental decision that is made when there is a change in the hypothesized direction.

What is to reject the null?

200

The mean of the z-distribution

What is 0?

200

The full or alternative name for the any of the t-tests.

What is Student's t-test?

200

The likelihood that inferences made in one study can be generalized to other times, samples, populations, etc. 

What is external validity?

200

The oldest sibling of the Kardashians.

Who is Kourtney?

300

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?

300

The common alpha level used.

What is .05?

300

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)? 

300

The level of confidence with which we can infer causal relations between variables in a research study.

What is internal validity?

300

This year's super bowl MVP.

Who is Patrick Mahomes II?

400

This is a false positive, or the rejection of H0 when it’s true.

What is a Type I error?

400

The basic assumption of all parametric tests (including z-tests).

What is normality (a normal distribution of population scores)? 

400

When your |tobt| > |tcrit|, you would make this statistical decision (related to your non-directional hypothesis). 

What is Reject H0?

400

Random assignment to treatment group is one way to increase this. 

What is internal validity?

400

Twitter recently exploded due to brooms standing up on their own; users were wrongly crediting this marvel to this pseudo-scientific (and very false) explanation.

What is the Earth's gravitational pull on February 10th?

500

Hypothesis testing prioritizes preventing this type of error.

What is a Type I Error? 

500

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. 

500

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)? 

500

Laboratory experiments are typically associated with higher _____ validity, while field experiments typically have higher ______ validity. 

What is internal; external? 

500

This dog breed won best in show at the 2020 Westminster Kennel Club Dog Show on Tuesday night. 

What is a standard poodle?

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