Small sample Test | DMPHT | SNS INSTITUTIONS

When sample size is small less thann 30 the central limit theorem does not assure to assume the distribution of sample statistics as normal. When the sample size is small the special probability distributions are used to determine critical value for the test statistic. Here we must have to assume that the small sample is drawn from normal population and based on it some important distributions and their applications in testing of hypothesis are discussed. Important properties of t – distribution: Few important properties are as under i. It is a continuous distribution with range -∞ to ∞. ii. Probability curve of t – distribution is symmetric about its mean. iii. Its mean is always zero. iv. For large value of sample size it follows normal distribution. #snsinstitutions #snsdesignthinkers #designthinking