Descriptive Statistics & Testing of Hypothesis.pdf
- 1. DESCRIPTIVE STATISTICS & HYPOTHESIS TESTING Resource Person: Mr. Amol Maruti Ghadge (Bio-Statistician, D. Y. Patil Medical College Hospital And Research Institute, Kolhapur)
- 6. Descriptive Statistics (for Qualitative Variables)
- 7. Descriptive Statistics (for Quantitative variables) Measures of Central Tendency Mean Mode Median Measures of Variability Range Variance Standard deviation Measures of Shape Skewness Kurtosis
- 8. ï± Find Descriptive Statistics for the given data ?
- 17. Significance Level (α): It denotes the probability of rejecting the null hypothesis when it is true. It is typically set before conducting the test, commonly at 0.05 or 0.01 representing the level of significance at which the results are considered statistically significant. A lower alpha value indicates a more stringent criterion for rejecting the null hypothesis Test Statistic: It is a numerical value calculated from sample data that is used to determine whether to reject the null hypothesis. The choice of the test statistic depends on the type of hypothesis test being performed and the nature of the data. For example, t-test, z-test, F-test, chi-square test statistics are commonly used in various hypothesis tests. Components of Hypothesis Testing P-value: It is the probability of obtaining a test statistic as extreme as, or more extreme than, the one observed in the sample data, assuming that the null hypothesis is true. A smaller p-value indicates stronger evidence against the null hypothesis. If the p-value is less than the significance level (α), the null hypothesis is typically rejected in favour of the alternative hypothesis
- 18. Errors
- 21. T Test in Excel
- 23. AGE 33 26 49 34 25 40 41 34 43 31 24 31 30 51 38 20 25 35 41 36 30 21 38 24 30 23 29 20 21 18 Exercise 1: Find All Descriptive Statistics for the variable Age.
- 24. Patient No Pain score Pain score (Before treatment) (After treatment) 1 6 5 2 5 4 3 7 7 4 6 4 5 7 5 6 5 4 7 7 7 8 5 4 9 6 4 10 8 6 11 7 5 12 8 8 13 5 4 14 6 5 15 6 5 16 7 5 17 6 5 18 7 5 19 6 5 20 6 6 21 8 7 22 6 5 23 7 7 24 8 7 25 8 6 26 6 5 27 7 5 28 8 6 29 9 8 30 8 8 Exercise 2: Is there a significant decrease in Pain due to a treatment ?
- 25. BMI (Group A) BMI (Group B) 21.6 24.7 27.3 20.8 27 28.6 27 22.4 27.7 27.8 32 25.1 31.4 23.4 29.8 26.6 27 28.6 27.1 24.7 32 23.2 24.7 25.4 26.3 24.1 26.6 24 25 26.3 23.8 24 25.8 23.7 24.1 22 27.9 25.3 26.6 22.8 25.8 24.7 24.9 24.7 26 22.2 26.6 23.8 27.8 22.4 24.9 24.9 23.8 24 27.1 20 27.1 24.7 28.7 25.3 Exercise 3: Is Average BMI of Group A is significantly larger than Group B ?
- 26. Exercise 4: Is Sport preference is associated with Gender ?
- 27. Any Query� Visit the Research Guidance Cell (4th Floor, Dr. D. Y. Patil Hospital and Research Institute)
- 28. Thank YouâŠ!!