Chapter 1. Introduction Basic concepts Fields of statistics Steps in a statistical inquiry Chapter 2. Collection of data Measurement Data collection methods The questionnaire The Philippine statistical system Chapter 3. Sampling and sampling techniques Basic concepts Methods of probability sampling Methods of nonprobability sampling Sample size determination Chapter 4. Presentation of data Textual presentation Tabular presentation Graphical presentation Chapter 5. Organization of data Raw data and array Frequency distribution Chapter 6. Measures of central tendency Summation The arithmetic mean The median The mode Chapter 7. Measures of location The percentiles The quartiles The declines Chapter 8. Measures of dispersion The range The variance ad standard deviation The coefficient of variation Chapter 9. Measures of Skewness and Kurtosis Symmetry and Skewness Common measures of Skewness Types of Kurtosis Measure of Kurtosis Chapter 10. Introduction to probability theory Probabilistic models Basic concepts of probability Approaches to assigning probabilities Rules of counting Properties of a probability function Conditional probability Independent events Random variables and distributions Expected value of random variable Common probability distributions Chapter 11. Sampling distributions Basic concepts Central limit theorem Sampling from the normal distribution Chapter 12. Exploratory data analysis Basic elements of exploratory data analysis Stem-and-leaf display Five number summaries Boxplots Chapter 13. Estimation: single population Basic concepts of estimating population parameters Point estimation of a parameter Confidence interval for the mean Confidence interval for the proportion Confidence interval for the variance Determining the sample size Chapter 14. Estimation : two population Basic concepts in selecting samples from two populations Point estimation of the difference between two means and of the difference between two proporions Point estimation of the ratio of two variances Confidences interval for the differences of means Confidence interval for the difference of proportions Confidence interval for the ratio of two variances Determining the sample sizes Chapter 15. Tests of hypotheses : single population Basic concepts in testing statistical hypotheses Hypothesis tests for the mean Hypothesis tests for the proportion Hypothesis test for the variance Chapter 16. Tests of hypotheses : two populations Hypothesis tests for two means Hypothesis tests for two proportions Hypothesis tests for two variances Chapter 17. Chi-square tests Goodness-of-fit test Test for independence Chapter 18. Simple linear regression analysis Correlation analysis Simple linear regression model Estimation using the method of least squares Diagnostic checking