scatter plots are used for
two quantitative values
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Brainpower
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box plots are used for
1 quantitative and 1 categorical variables
Bar charts are used for
only categorical variables
Histograms are the
outcome of 1 quantitative variable
, Conditions of means
Independence
Randomization
10% condition
Nearly normal condition large enough sample (n at least 30).
Conditions of proportions
Independence
Randomization
10% condition
Proportions: Success/Failures - You must have at least 10 expected successes and 10 failures.
2 independent mean conditions
Independence
Randomization
10% condition
Nearly normal condition
Independent group assumptions
Paired Means T-Test (Matched Pairs) conditions:
Independence
Randomization
10% condition
Nearly normal condition large enough sample (n at least 30).
Paired Data Assumption - the data is a matched pair between the 2 groups of data.
Independent Proportions conditions
Independence
Randomization
10% condition
Counted Data Condition - the data is categorical (based on counts)
Expected Successes and Failures - at least 10 successes and 10 failures from each group.
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