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Quantitative and Qualitative Data collection methods
Experimental Research Methods
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Questionnaires are an effective way of quantifying data from a sample group, and testing emotions or preferences. This method is very cheap and easy, where budget is a problem, and gives an element of scale to opinion and emotion. These figures are arbitrary, but at least give a directional method of measuring intensity. By definition, this experiment method must be used where emotions or behaviors are measured, as there is no other way of defining the variables.

Whilst not as robust as experimental research , the methods can be replicated and the results falsified. Observational research is a group of different research methods where researchers try to observe a phenomenon without interfering too much.

Observational research methods, such as the case study , are probably the furthest removed from the established scientific method. Observational research tends to use nominal or ordinal scales of measurement. Observational research often has no clearly defined research problem , and questions may arise during the course of the study. Observation is heavily used in social sciences, behavioral studies and anthropology, as a way of studying a group without affecting their behavior.

Whilst the experiment cannot be replicated or falsified , it still offers unique insights, and will advance human knowledge. Case studies are often used as a pre-cursor to more rigorous methods, and avoid the problem of the experiment environment affecting the behavior of an organism. Observational research methods are useful when ethics are a problem. In an ideal world, experimental research methods would be used for every type of research, fulfilling all of the requirements of falsifiability and generalization.

However, ethics , time and budget are major factors, so any experimental design must make compromises. As long as a researcher recognizes and evaluates flaws in the design when choosing from different research methods, any of the scientific research methods are valid contributors to scientific knowledge.

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Share this page on your website: How to Choose the most Appropriate Design? This article is a part of the guide: Select from one of the other courses available: Don't miss these related articles:. Paper-pencil-questionnaires can be sent to a large number of people and saves the researcher time and money. People are more truthful while responding to the questionnaires regarding controversial issues in particular due to the fact that their responses are anonymous.

But they also have drawbacks. Majority of the people who receive questionnaires don't return them and those who do might not be representative of the originally selected sample. A new and inevitably growing methodology is the use of Internet based research. This would mean receiving an e-mail on which you would click on an address that would take you to a secure web-site to fill in a questionnaire. This type of research is often quicker and less detailed. Some disadvantages of this method include the exclusion of people who do not have a computer or are unable to access a computer.

Also the validity of such surveys are in question as people might be in a hurry to complete it and so might not give accurate responses. Questionnaires often make use of Checklist and rating scales. These devices help simplify and quantify people's behaviors and attitudes.

A checklist is a list of behaviors,characteristics,or other entities that te researcher is looking for. Either the researcher or survey participant simply checks whether each item on the list is observed, present or true or vice versa. A rating scale is more useful when a behavior needs to be evaluated on a continuum. They are also known as Likert scales. Furthermore qualitative methods can beused to improve the quality of survey-based quantitative evaluations by helping generate evaluation hypothesis; strengthening the design of survey questionnaires and expanding or clarifying quantitative evaluation findings.

These methods are characterized by the following attributes:. Regardless of the kinds of data involved,data collection in a qualitative study takes a great deal of time. The researcher needs to record any potentially useful data thououghly,accurately, and systematically,using field notes,sketches,audiotapes,photographs and other suitable means. The data collection methods must observe the ethical principles of research. The qualitative methods most commonly used in evaluation can be classified in three broad categories: Different ways of collecting evaluation data are useful for different purposes, and each has advantages and disadvantages.

Various factors will influence your choice of a data collection method: The purpose of this page is to describe important data collection methods used in Research.. Quantitative and Qualitative Data collection methods The Quantitative data collection methods , rely on random sampling and structured data collection instruments that fit diverse experiences into predetermined response categories.

Observing and recording well-defined events e. Obtaining relevant data from management information systems.

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Data analysis methods in the absence of primary data collection can involve discussing common patterns, as well as, controversies within secondary data directly related to the research area.

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A source of confusion for many people is the belief that qualitative research generates just qualitative data (text, words, opinions, etc) and that quantitative research generates just quantitative data (numbers). Sometimes this is the case, but both types of data can be generated by each approach.

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The purpose of this page is to describe important data collection methods used in Research.. Data Collection is an important aspect of any type of research study. Inaccurate data collection can impact the results of a study and ultimately lead to invalid results. Data coding in research methodology is a preliminary step to analysing data. The data that is obtained from surveys, experiments or other sources are in raw form.

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The methods section describes actions to be taken to investigate a research problem and the rationale for the application of specific procedures or techniques used to identify, select, process, and analyze information applied to understanding the problem, thereby, allowing the reader to critically. CHAPTER 4 Research Methodology and Design Introduction data collection methods used in the study was discussed. Finally, in order to ensure trustworthiness of the research, appropriate criteria for qualitative researchwere Research methodology and design. Chapter 4: Research methodology and design research. 4 of.