It is difficult to find sincere and honest interviewers or enumerators. Types of Data Quantitative Data Data that is expressed in numbers and summarized using statistics to give meaningful information is referred to as quantitative data. Collected data lack uniformity because they are collected by different correspondents and they differ in quality and taste. We will discuss each of these data collection methods below and examine their advantages and disadvantages. The Disadvantage of Bias and Dishonesty When surveys, interviews, questionnaires and focus groups are used to collect information, there are potential problems with bias and dishonesty.
My e-book, offers practical assistance to complete a dissertation with minimum or no stress. They are well conversant with the local conditions like language, communication, food habits, traditions etc. In such cases the data collected may be fairly accurate. The drug administered is the treatment, while 10mg, 20mg and 40mg are the levels of the treatment. Area to be covered is wide. Secondly, quantitative research methods and measures are usually universal, like formulas for finding mean, median and mode for a set of data, whereas, in qualitative research each research is approached individually and individual measures are developed to interpret the primary data taking into account the unique characteristics of the research.
It is easy to use information already gathered by someone. It may be necessary to conduct several interviews over multiple areas, which again can increase costs. The respondents may not be prepared for an interview when the enumerator approaches them with the schedule. Two persons may judge the same phenomena differently. Mailed Questionnaire method: This is a very commonly used method of collecting primary data.
Primary sources of data collection have their advantages such as addressing specific research problems and applications in data management and storage. In order to go for this process, the researcher has to take care of everything, starting from designing questionnaires, collecting replies from respondents and then interpreting it depending on requirements. One of the differences between the two types of data is that secondary data takes less time to obtain, while primary data takes more time because the information has to be gathered from scratch. Try this Statistics practice question: Looking for more Statistics practice? There are two types of data: primary and secondary data. The descriptions of each of these methods are briefly explained on the following table : Survey method Description Mail survey A written survey that is self-administered Telephone survey A survey conducted by telephone in which the questions are read to the respondents Personal interview A face-to-face interview of the respondent Major survey methods and their descriptions Alternatively, from the viewpoint of practicality, the most popular variations of surveys include , and documentation review.
Data which are not originally collected by the researcher but obtained from books, records, journals, dissertations, Government Orders, etc. You can read more about research approach. Collection of is a time consuming affair. Secondary data sources can give you with a huge amount of information, but quantity does not mean appropriateness. Additional costs might be incurred associated with arranging and conducting interviews, travelling etc.
While primary data collection is a powerful method for acquiring information, it does pose several significant problems including: Cost Compared to secondary research, primary data may be very expensive since there is a great deal of marketer involvement and the expense in preparing and carrying out research can be high. Collecting primary data involves more man-hours and is more labor intensive than collecting secondary data. It is like raw material. For each type of business to be successful, it is absolutely crucial to have a reliable information for the market and customer characteristics. Questionnaire It is a set of questions which can be structured, unstructured and open ended or close ended. A very high degree of accuracy is required. It is possible to collect the information that is just relevant for the study.
Thus primary data becomes a more accurate tool since we can use data which is useful for us. It is a source of empirical data on attitudes covering a majority of the world´s population nearly 90% It is carried out by a worldwide network of social scientist who, since 1981, have conducted representative national surveys in almost 100 countries. It requires high cost, plenty of time and hard effort. Advantages · Research is oriented for specific goals and purpose, cutting out possibility of wasting resources. The process has been simplified. Here first the questionnaires are mailed to the informants with a formal request to answer the question and send them back. You can read more about ethical considerations.
The researcher may either visit the respondent in person at his home or meet him at the central location as mutually decided by them. Although this type of exercise may be lengthy and costly the information which we gather from is highly relevant for designing marketing strategy for the client. New technology has revolutionized this world. It will not be expensive. With surveys, there's typically no additional chance to get feedback from respondents, so questions that are too narrow limit the accuracy of survey results. Precise information may be obtained via search engines.