Central tendency and spread
Another term for this measure of central tendency is "average."
What is mean?
In an experiment, you manipulate this to see the effect on this.
This is the type of test I would conduct if I measure the DV at two different timepoints from each individual in my sample.
What is repeated measures/ dependent samples t-test?
This is the type of ANOVA that is conducted when there are two independent variables.
What is two-way ANOVA.
Correlational designs look at whether a relationship exists between two variables, where experimental designs look at whether THIS TYPE of relationship exists between two variables.
What is a causal relationship?
This is the best measure of central tendency when you have skewed data.
What is median?
Any variable that only has two options for responses (e.g., true/false; yes/no) is said to be this.
Dichotomous; Will also accept categorical or nominal.
These are two characteristics of the t-distribution.
What are: Symmetrical, centered at 0, shape varies according to sample size/df
After confirming a significant omnibus test, these follow-up tests confirm which levels of a factor are significantly different from each other.
What are pairwise comparisons?
These are two types of experimental designs, which often refer to whether there is one or more group, or how individuals are assigned to groups.
What are within-subject, between subject, mixed, factorial, or single-case designs?
This, conceptually, is the average distance between each data point and the mean.
What is the standard deviation?
Temperature (in Celsius) is this type of variable/ has this scale of measure.
What is interval?
This is the type of test one would conduct to see if a battery manufacturing company wants to see if their batteries last an average of 40 hours, with sigma unknown.
What is a single sample t-test?
These type of pairwise comparisons are conducted after confirming that there is a significant interaction.
What are simple effects tests?
This type of experimental design examines the relationship between pre-existing variables that cannot be directly manipulated by the experimenter.
What is a quasi-experimental design?
Name one measure of central tendency and one measure of spread that is sensitive to extremes.
What is Mean, and pretty much any measure of spread?
These are two examples of an ordinal variable.
What is... Dr. Robbins will check your answers.
This is the type of test one would conduct to see if a battery manufacturing company wants to see if their batteries last an average of 40 hours, with the population standard deviation of all batteries know to be 2 hours.
What is a z-test?
Conducting a two-way ANOVA is better than conducting 2 one-way ANOVAs for these reasons (name 2).
What are... Multivariable ANOVAs reduce Type I error rate, allow for exploration of interaction effect, and are more powerful
Having a high degree of control in an experiment can ensure that changes in the IV are strictly due to changes in the DV. Our confidence that this happens in our experiments is also known as THIS.
What is internal validity?
This is the measure of spread in the sampling distribution of the mean.
What is the standard error?
By examining the degree to which repeatedly using the same instrument/measure on the same group of people produces similar scores, a researcher can estimate THIS aspect of the instrument.
What is reliability?
This is the test I would conduct if I'm testing the effect of travel on stress levels by measuring stress from a group of individuals departing an airport and comparing that to stress of a group that is arriving to the airport.
What is an independent samples t-test?
This is the number of F-tests that are conducted with a 2x3x3 between-subjects design.
These are at least 2 threats to internal validity.
Demand characteristics, reactivity effects (order, Hawthorne, testing), instrumentation effects, selection effects, maturation effects, history effects, confounding variables