Introduction to statistics, descriptive statistics, measures of central tendency, measures of dispersion. Presentation of data. Probability distributions, discrete probability distributions, Binomial, Poisson and Hyper-geometric distribution. Continuous probability distributions, Uniform, Normal and Exponential distributions. Hypothesis testing. Tests concerning means ` and difference between means. z and t distributions. One sided z and t tests, two sample z and t tests, paired comparisons. Confidence intervals based on z and t statistics for a single mean and the difference between means. Chi-Square test. Chi distribution, contingency tables. Pre requisite ENHP 128