Research Design by Zennifer L. Oberio

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Research Design by Zennifer L. Oberio

  1. 1. complete sequence structure all the major parts
  2. 2. A good research design … Enhances the validity of the research  Minimizes the plausible alternative explanations for the hypothesized cause- effect relationship.
  3. 3.  1. Objectives of the study/ Type of the study  2. Independent Variable / Manipulated variable  3. Dependent Variables/ Observation/ Measures  4. Treatment and Control  5. Subject of the study/ Test organisms
  4. 4.  6. Samples or groups  7. Sampling plan  8. Method of assignment  9. Control of Extraneous Variables  10. Replicates/ Trials  11. Statistical Analysis
  5. 5.
  6. 6. Definition of Terms 
  7. 7. Definition of Terms  
  8. 8. Definition of Terms    
  9. 9. Definition of Terms  
  10. 10. Definition of Terms  
  11. 11. Definition of Terms 
  12. 12. • • • • • • • • • •
  13. 13. • • • • • • • • • •
  14. 14. • • • • • • • • •
  15. 15. • • • • • • • • •
  16. 16. • • • • • • • • • •
  17. 17. Statistical Techniques Descriptive Central Tendency mean median mode Variability Dispersion range Quartile deviation SD variation Shape/ dispersion symmetry skewness Kurtosis modality Correlation bivariate multivariate regression Bivariate Multivariate Inferential Hypothesis Testing parametric Non- Geometric Assumption Point Interval Functions of Statistics: Description and Inference
  18. 18. Purpose Inferential Estimation Hypothesis DECISION TREE FOR INFERENTIAL STATISTICS
  19. 19. Inferential Estimation (quantitative) Point estimate Confidence interval About x
  20. 20. Inferential Hypothesis Type of data Ranks (nonparametric) Means (parametric) Frequency Counts (nonparametric) Variances (parametric)
  21. 21. Type of data Ranks Two levels of independent variables Independent samples Mann- Whitney U Correlated Samples Wilcoxon matched pairs signed ranks T Two levels of independent variables Independent Samples Wilcoxon Wilcox multiple Comparisons
  22. 22. Type of data Frequency counts Goodness of fit x2 Test of independence x2
  23. 23. Means 1 independent variable One sample One sample 1 test Two levels of independent variables independent samples Correlated samples Two levels of independent variables Two independent variables Independent samples Factorial ANOVA Independent t- test Correlated t-test Independent samples Correlated samples One-way ANOVA Tukey HSD Tukey HSD Correlated measures ANOVA Type of data
  24. 24. Type of data Variances (parametric) F-test
  25. 25. No Yes Randomized or true experiment Is there a control group or multiple measures? Yes No Quasi-experiment non-experiment
  26. 26. References Amamanglon KPH. 2007. The change in the cell wall components of the different parts of pechay (Brassica rapa) exposed to ultraviolet-B at varying duration[unpublished research paper]. Ilo-ilo City: Philippine Science High School Western Visayas 66p. Araneta MEAM, Brasileo L.l. 2006. Line-follower robot: a technology to aid the elderly [unpublished research paper]. Iloilo City: Philippine Science High School Western Visayas 48p. Billones I.R. Palma RMR, Villacastin AJB. 2006. Pathogenic bacteria found in various streetfood such as juices,food sauce and ready-to-eat fruits at randomly selected places in IloiloCity [unpublished research paper] Iloilo City: Philippine Science High School Western Visayas. 49p. Cadornigara ML. 2012. Fundamentals of resarch, methods and models, Iloilo City: Mindset Publishin Inc. Caintic HE, Cruz JM. 2008. Scientific research manual. Quezon City: C&E Publishing, Inc ,;147 p. Contreras ST. 2008. Allometric models for diwal9Philas Orientalis) Iloilo City: Philippine Science High School Western Visayas Parker SP, editor 1994. McGraw-Hill dictionary of scientific dictionary of scientific and technical terms fifth edition. New York: McGraw-Hill, Inc.; 2194p.

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