1. Descriptive Statistics Method of collecting, organizing, displaying, and drawing conclusion of data

2. Collecting and Organizing Organizing/Processing, Calculating DATA measured (mm scale) (collect) Variables Numerical Categorical ContinuousDiscreteDichotomous Polychotomous Interval Ratio scale Nominal Ordinal scale

3. DATA SUMMARY (calculation) Mean - Median – middle most (50% are higher and 50% are lower) Mode – most repeated Measure of Variability –Range = Mx-Mn –Variance s 2 = –SD Proportion

4. DATA PRESENTATION (displaying) Table (number, title, column and raw labels, body of data, total, source) – self explain. Graph: –line graph – numerical variables –Scatter – numerical variables –bar graph – categorical variables –Histogram – continuous variables –pie graph – proportion of a whole with a few elements, categorical variables

5. Descriptive Statistics Type of variable Measurement scale StatisticsPresentation Numerical discrete Interval Ratio M, or M, or M (rare), R, SD Histogram scatter plot line graph Numerical continuous Interval Ratio M, or M, or M (rare), R, SD Histogram scatter plot line graph Categorical dichotomous Nominal Ordinal Proportion (%)Table, Pie, Bar graph Categorical polychotomous Nominal Ordinal Proportion (%)Table, Pie, Bar graph

6. Match Variables 1.Hemoglobin 2.Level of anemia: normal, mild, severe 3.Smoking: yes, no 4.Pulse rate per minute Type a. Quantitative discrete b. Qualitative dichotomous c. Qualitative polychotomous d. Quantitative continuous

7. Match Variables 1.Hemoglobin 2.Level of anemia: normal, mild, severe 3.Smoking: yes, no 4.Pulse rate per minute Scale of measurement a. Ratio b. Interval c. Nominal d. Ordinal

8. Table Table. Number of FETP students distributed by sex and nationality, 2006 Nationalit y MaleFemale BRN10 CAM20 CHN33 LPDR02 THL76 VN02 Table 2. Number of FETP students distributed by sex and nationality, Thailand, 2006 * BRN: Brunei, CAM: Cambodia, CHN: China, LPDR: Lao People Democratic Republic, THL: Thailand, VN: Vietnam Nationality*MaleFemale BRN10 CAM20 CHN33 LPDR02 THL116 VN02 Total1713 Source: Dara et al