Experiments Flashcards
When creating an experiment, what is the order?
Theory
Research Question
Design
Hypothesis
Data
After the data has been produced in an experiment, the theory has either been supported, or must be ______________
Revised
Treatment levels are known as _____________, response measures are known a_________
Ivs and Dvs
Classification Iv’s refer to__________________
Characteristics which are intrinsic to an individual
Nuisance variables refer to what?
Uncontrolled variables which confound the esperiment
When grouping participants in an experiment, what techniques can be used to control?
Random allocation or matched pairs/random block
A research hypothesis refers to
A general statement about the presumed nature or direction of something
A statistical hypothesis refers to
A precise statement about how the parameters of distributions of groups will differ
The two types of statistical hypothesis are the ________ hypothesis, and the ________ hypothesis. They are both ___________ exclusive.
Null and alternate, which are mutually exclusive
The two treatment distribution parameters are the ________ and __________ _________
Mean and SD
If treatment parameters differ for each group we _______ the null
A consider B reject C accept D we cannot know at this stage of analysis
B reject
Random Variation refers to _________________
Samples which deviate from the population
Testing if our differences have occurred by chance, or are true differences, is done by comparing what two things?
Observed differences and F distribution
The lower the p value, less chance the _____ hypothesis is true
Null
Type 1 errors are known as ___________________, whilst type 2 errors are known as ___________
Type 1 = false positive, type 2 = false negative
