You use a t-scoreâalso known as a Student's t-distributionâwhen you want to estimate a population statistic, such as the mean, or compare two groups of data. The t-score gives good results from small samples as long as the sample data form a bell-shaped curve when graphed.
The only fortified wine that can stand open any length of time is Madeira. That'll be good for 6 months. All the rest (port or sherry or marsala), depending on what it is exactly, only maximum, 2 weeks. After that, absolutely no good. And even 2 weeks is pushing it for some fortified wines. cheers, Bonnie.
Wine Life Expectancy. Exactly how long your wine will last depends on the wine itself. Most red and white wines will last for about two to three days after opening; after this point, they begin to sour and lose their flavor. Sparkling wines lose their carbonation almost immediately and should be enjoyed as soon as they are opened.