T estimate of a mean

The mean of the sample depends on which values were selected.[br]The mean of the sample is a random variable.[br]When standard deviation of the population is unknown and we use standard deviation of the sample,[br]we need to use Student's t-distribution to calculate T estimate of a mean.[br][br]T estimate of a mean can also be calculated with probability calculator in Geogebra.[br]

Information: T estimate of a mean