15939318
Description
Quiz by Michael Jardine, updated more than 1 year ago
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Created by Michael Jardine
about 6 years ago
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Question 1
Question
What conditions must be present in order to use an independent t-test?
A [blank_start]____________[blank_end] dependent variable;
A [blank_start]____________[blank_end] independent variable (with [blank_start]____________[blank_end] levels).
Answer
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Continuous
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Class
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2
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>2
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≥2 (>=2)
Question 2
Question
What conditions must be present in order to use a 1-way ANOVA?
A [blank_start]____________[blank_end] dependent variable;
A [blank_start]____________[blank_end] independent variable (with [blank_start]____________[blank_end] levels).
Answer
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Continuous
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Class
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≥2 (>=2)
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2
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>2
Question 3
Question
In an ANOVA, the F value is obtained by the formula:
---- Groups MS / Error MS ----
...where Groups MS = Groups SS / Groups DF
...and Error MS = Error SS / Error DF
In these, what are the following defined as?
DF = [blank_start]____________[blank_end];
MS = [blank_start]____________[blank_end];
SS = [blank_start]____________[blank_end];
…therefore:
Groups MS represents [blank_start]____________[blank_end], whereas Error MS represents = [blank_start]____________[blank_end].
Answer
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degrees of freedom
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mean squared deviation from the mean
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mean squares
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sum of squared deviation from the mean
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sum of squares
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BETWEEN groups’ mean-squares
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WITHIN groups’ mean-squares
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BSOD
Question 4
Question
When reporting an ANOVA, what do each of the following numbers represent?
Options are:
#1 - df BETWEEN groups (# of treatment groups)
#2 - df BETWEEN groups (# of treatment groups - 1)
#3 - df BETWEEN groups ( (# of treatment groups) x (# of samples in each group) )
#4 - df BETWEEN groups ( (# of treatment groups - 1) x (# of samples in each group - 1) )
#5 - df WITHIN groups (# of treatment groups)
#6 - df WITHIN groups (# of treatment groups - 1)
#7 - df WITHIN groups ( (# of treatment groups) x (# of samples in each group) )
#8 - df WITHIN groups ( (# of treatment groups - 1) x (# of samples in each group - 1) )
Answer
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#2 BETWEEN
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#1 BETWEEN
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#3 BETWEEN
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#4 BETWEEN
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#5 WITHIN
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#6 WITHIN
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#7 WITHIN
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#8 WITHIN
Question 5
Question
Homoscedasticity vs heteroscedasticity:
Heteroscedasticity means:
Answer
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Variance is unequal, e.g. error gets larger on one side
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Variance is unequal, e.g. more samples on one side
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Distribution is unequal, e.g. error gets larger on one side
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Distribution is unequal, e.g. more samples on one side
Question 6
Question
In order to perform an ANOVA, you should transform if your data is:
Answer
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Heteroscedastic
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Homoscedastic
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Really shitty
Question 7
Question
Question: “Is aerobic enzyme activity greater in males than females?
Dependent variable: [blank_start]____________[blank_end], which is a [blank_start]____________[blank_end] variable;
Independent variable: [blank_start]____________[blank_end], which is a [blank_start]____________[blank_end] variable.
Answer
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Aerobic enzyme activity
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Continuous
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Sex
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Class
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