# t-distribution

**n=2**

"Since the t-distribution is like the standard normal distribution but with a higher variance (smaller peak and fatter tails), this would seem to suggest that the sample standard deviation s systematically underestimates the population standard deviation, making it in fact a biased estimator."

"A t-distribution is like a Z distribution, except has slightly fatter tails to reflect the uncertainty added by estimating "

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