Difficulties in observation: Observation of human behaviour is more subjective than the observation of physical or biological phenomena. Descriptive Research (otherwise known as Ex-post facto research): Description of state of affairs as it exists at present • No control over variables • Can only report what has happened or already happening Analytical Research : Researcher has to use facts or information already available and analyze these to make a critical evaluation of the material. limitations of research slideshare: The project topic home for MBA, MSC, BSC, PGD, PHD final year student: Browse and read free research project topics and materials. Limitations of OR In the quantitative analysis of operations research, certain assumptions and estimates are made for assigning quantitative values to factors involved. Hire a project writer. The leaves of Kalanchoe pinnata were percolated in … 1.6 Scope and Delimitation of the Study Coverage of the study: Area Subject/problem Research apparatus, equipment or instrument Time frame Any limitations in the reference population, sample size 14. The subjectivity on the part of the observer has a direct impact on the interpretation and … Limitations  The limitations of the study are those characteristics of design or methodology that impacted or influenced the interpretation of the findings from your research  They are the constraints on generalizability, applications to practice, and/or utility of findings  that are the result of the ways in which you initially chose to design the study and/or the method used to establish internal and external validity.  Limitations … limitations of educational research 2.