constant of 't' distribution
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The T distribution is a continuous probability distribution of the z-score when the estimated standard deviation is used in the denominator rather than the true standard deviation
Step-by-step explanation:
The t distribution has the following properties: The mean of the distribution is equal to 0 . The variance is equal to v / ( v - 2 ), where v is the degrees of freedom (see last section) and v > 2. The variance is always greater than 1, although it is close to 1 when there are many degrees of freedom.
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