STATISTICAL TECHNIQUES AND TOOLS
DEGREE OF FREEDOM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sources of equation for solving degree of freedom could be from:
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Material balance
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Process specification
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Physical properties
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Physical contraint
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Explanation:
Detailed explanation-1: -The degrees of freedom for the chi-square are calculated using the following formula: df = (r-1)(c-1) where r is the number of rows and c is the number of columns. If the observed chi-square test statistic is greater than the critical value, the null hypothesis can be rejected.
Detailed explanation-2: -The t-test can be used when the population standard deviations are not known and the sample size is smaller (less than 30). The two sample t-statistic calculation depends on given degrees of freedom, df = n1 + n2 – 2.
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