FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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n
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n+1
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1-n
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n-1
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Detailed explanation-1: -We know that when you have a sample and estimate the mean, you have n – 1 degrees of freedom, where n is the sample size. Consequently, for a 1-sample t test, use n – 1 to calculate degrees of freedom. The DF define the shape of the t-distribution that your t-test uses to calculate the p-value.
Detailed explanation-2: -Therefore, the degrees of freedom of an estimate of variance is equal to N-1, where N is the number of observations. Recall from the section on variability that the formula for estimating the variance in a sample is: The denominator of this formula is the degrees of freedom.
Detailed explanation-3: -The degrees of freedom are n-2.
Detailed explanation-4: -Determine the size of your sample (N). Subtract 1. The result is the number of degrees of freedom. 13-Feb-2023