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        Q: Why normal distribution is better than other distributions?
A: Normal distribution 're not `` better . '' It is is perhaps , easier to cooperate with . All introductory text books and courses on statistical cover it in huge details , its properties is well known ... and there 's a lot of tables you are able be mentioned . But if the actual-global situation you 're was endeavouring to model does not resemble a ordinary distribution was later it is extremely bad to attempt to use the correctties of a ordinary distribution or to attempt to force a ordinary distribution on your data . Doing so will give you incorrect responses . 

Q: How does the standard normal distribution differ from the t-distribution?
A: The standard ordinary distribution has a mean of 0 and a standards deflection of 1 . 

Q: What is the difference between t-distribution and standard normal distribution?
A: The standard ordinary distribution has a mean of 0 and a standards deflection of 1 .