STATISTICAL TECHNIQUES AND TOOLS
T DISTRIBUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Find the degree of freedom of n = 15. df =?
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13
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14
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15
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16
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Explanation:
Detailed explanation-1: -Degrees of freedom, often represented by v or df, is the number of independent pieces of information used to calculate a statistic. It’s calculated as the sample size minus the number of restrictions.
Detailed explanation-2: -For instance, if a sample size were ‘n’ on a chi-square test, then the number of degrees of freedom to be used in calculations would be n-1. To calculate the degrees of freedom for a sample size of N=9. subtract 1 from 9 (df=9-1=8).
Detailed explanation-3: -Answer and Explanation: Given-The number of data in the test or total sample size is N=20 . Hence, the degrees of freedom for the test of the significance of the correlation coefficient (r) is 18 .
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