Measurements on an ordinal scale
What additional information is obtained from measurements on an interval scale compared to measurements on an ordinal scale?
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Under what circumstances should you use a grouped frequency distribution instead of a regular frequency distribution?
If we are testing for the difference between the means of 2 related populations with samples of n1 = 20 and n2 = 20, the number of degrees of freedom is equal to
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What are the degrees of freedom for the machines, operators, interaction and error?
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