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HGT Hydraulic Gyratory Crusher

HGT Hydraulic Gyratory Crusher

HGT Gyratory Crusher is a new-type intelligent coarse crusher with big capacity and high efficiency. It integrates mechanical, hydraulic, electric, automated, and intelligent controlling technologies which grant it with advantages traditional crushing

European Type Jaw Crusher PEW

European Type Jaw Crusher PEW

Jaw crushers has stationary jaw crusher, portable jaw crusher and mobile jaw crusher (crawler jaw crusher). Jaw crusher (PEW Series) is not only able to be used together with mine-selecting and gravel processing equipments but also be used independen

Jaw Crusher PE

Jaw Crusher PE

Jaw crusher is driven by a motor, and the moving jaw moves up and down via eccentric shaft. The angle between fixed jaw and moving jaw becomes smaller when the moving jaw runs down, then the materials are crushed into pieces. It will become bigger whe

HPT Hydraulic Cone Crusher

HPT Hydraulic Cone Crusher

Base on the latest technology and decades of years’ producing experience, Our Company designed the HPT series cone crusher. It has excellent crushing efficiency and good hydraulic control system. Now the HPC series cone crusher has wide application

HST Hydraulic Cone Crusher

HST Hydraulic Cone Crusher

HST Single Cylinder Hydraulic Cone Crusher is a new high-efficiency cone crusher independently researched, developed and designed by SBM through summarizing over twenty years of experience and widely absorbing advanced American and German technologies

CI5X Series Impact Crusher

CI5X Series Impact Crusher

CI5X Impact Crusher breaks materials with impact force. When materials enter the working area of hammer, they may be crushed under the high-speed shock and then thrown onto the impact device above the rotor for another crushing. Next, materials bounce

VSI6X Series Vertical Crusher

VSI6X Series Vertical Crusher

Due to the increasing market demand for the scale, intensification, energy conservation, environment protection and high-quality machine-made sand, SBM, a Chinese professional sand maker manufacturer, further optimizes the structure and function of tr

VSI5X Vertical Shaft Impact Crusher

VSI5X Vertical Shaft Impact Crusher

VSI Crushers Working Principle Raw material falls down into feed hopper, and then enters rotor through central entrance hole. It is accelerated in high-speed rotor, and then is thrown out at speed of 60-75m/s. When hitting anvil, it is crushed. Final

VSI Vertical Shaft Impact Crusher

VSI Vertical Shaft Impact Crusher

VSI Series vertical shaft impact crusher is designed by reputed German expert of SBM and every index is in worlds leading standard. It incorporates three crushing types and it can be operated 720 hours continuously. Nowadays, VSI crusher has replaced

VUS aggregate optimization system

VUS aggregate optimization system

The VU system is a global most-advanced dry-process sand-making system. The system is constructed like a tower. Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimizatio

MTW-Z European Trapezium Mill

MTW-Z European Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

5X Series Roller Grinding Mill

5X Series Roller Grinding Mill

Grinding roller of MB5X Pendulum Roller Grinding Mill l adopts diluted oil lubrication. It is a technology initiated domestically which is maintenance-free and easy to operate. Diluted oil lubrication is oil bath lubrication, more convenient than grea

MTW Trapezium Mill

MTW Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

LM Vertical Mill

LM Vertical Mill

LM Vertical Grinding Mill integrates crushing, drying, grinding, separating and transport. The structure is simple while the layout is compact. Its occupational area is about 50% of that of the ball-milling system. The LM grinding mill can also be arr

TGM Trapezium Mill

TGM Trapezium Mill

TGM Super Pressure Trapezium Mill The operation principle of main unit of Trapezium mill is that main unit runs with the central shaft that is driven by a gear box. The top of the shaft is connected with a quincunx stand on which a grinding roller is

what are the advantages to primary data in sociology? ehow

Define Primary & Secondary Data Synonym

Scientists of every specialty, from sociology to astronomy, employ various research methods for data collection. Data are placed into two categories -- primary and secondary -- depending on who

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What is Primary Data? + [Examples & Collection Methods]

Advantages of Primary Data Over Secondary Data. When discussing the advantages of primary data over secondary data, a lot of examples can be sighted. This is because primary data has vast uses in research, statistics, and even business. Specific; Collecting your own data allows you the freedom to address issues specific to your business, or

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eHow eHow

Learn how to do just about everything at eHow. Find expert advice along with How To videos and articles, including instructions on how to make, cook, grow, or do almost anything.

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Advantages and Disadvantages of Secondary Data Essay

Primary and Secondary Data Table of Contents Table of Contents 2 Introduction 3 About the company 3 Different types of data and research methodology 4 5 different types of secondary research 4 Nature of Research required for the new product 5 Reference 6 Introduction In the world of the 21st century, rapid change and tremendous development is the underlying theme that is applicable for running

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Sociological Methods Sociology Central: home

Sometimes it’s impossible to collect primary data people may deny you access or the behaviour you want to research is in the past and the participants are no-longer alive. Example: Durkheim ("Suicide: A Study In Sociology", 1897). There are advantages in terms of time and money collecting primary data on national crime

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Types of primary data eHow

Jul 14, 2020· Although primary data is ideal for a researcher, as he can home in on the specific information he is looking for, secondary data is also useful, because it can tell the researcher whether his research is new. An important point to note when considering types of primary data is that individual data types can have several descriptors.

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Utility of sociology SlideShare

Jun 27, 2014· When conducting a sociological study, primary data is data acquired directly from the source through interviews, surveys or observations. This data presents several advantages over secondary data, which is based on the research of others. Utility of Sociology Uses of Sociology 1.

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Research Methods in Sociology An Introduction

Jan 03, 2016· An introduction to research methods in Sociology covering quantitative, qualitative, primary and secondary data and defining the basic types of research method including social surveys, experiments, interviews, participant observation, ethnography and longitudinal studies. Why do social research? The simple answer is that without it, our knowledge of the social world is limited to our

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Advantages & disadvantages of ethnographic research eHow

Jul 14, 2020· Ethnographic research is a method of study which involves the field observation and qualitative analysis of human behaviour. While ethnographic research can be applied to virtually any kind of sociological or anthropological subject of inquiry, there are distinct advantages and disadvantages to using the method.

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Primary Data Topics Sociology tutor2u

Primary data, in sociology, refers to data that has been generated by the researcher themselves. For example, they may have conducted a questionnaire or a series of interviews, or they might have carried out an observation or experiment.This is in contrast with secondary data which is data that already exists (such as existing research or official statistics).

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What is primary data? a2-level-level-revision, sociology

Primary data is that which is collected by sociologists themselves during their own research using research tools such as experiments, survey questionnaires, interviews and observation.. Primary data can take a quantitative or statistical form, e.g. charts, graphs, diagrams and tables. It is essential to interpret and evaluate this type of data with care.

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What are some strengths and weaknesses of Primary Data

Strengths Primary data is reliable way to collect data because the researcher can do it again as they know the procedures, how it was collected and analysed since they did it themselves. Also, the chances are it will also be more up to date too. Data gathered years previously (e.g. Milgram) are less likely to provide reliable answers to the

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Utility of sociology SlideShare

Jun 27, 2014· When conducting a sociological study, primary data is data acquired directly from the source through interviews, surveys or observations. This data presents several advantages over secondary data, which is based on the research of others. Utility of Sociology Uses of Sociology 1.

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Term Paper on Data Collection Sociology Discussion

The ‘primary’ sources provide data gathered at firsthand and the ‘secondary’ ones are those from which data are got at, secondhand, that is, sets of data are culled from other people’s original data. It is not always easy, however, to be able to determine whether a particular source is ‘primary’ or ‘secondary.’

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Advantages of Primary Research: Get a First-Hand

When researchers use primary data, they observe data in real time and are at the scene where collection of data is going on. Therefore, researchers can be certain that the recorded data is a reflection of reality. On other words, primary research is the closes form of

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Sociological Methods Sociology Central: home

Sometimes it’s impossible to collect primary data people may deny you access or the behaviour you want to research is in the past and the participants are no-longer alive. Example: Durkheim ("Suicide: A Study In Sociology", 1897). There are advantages in terms of time and money collecting primary data on national crime

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Purpose And Advantages Of Primary Data

Secondary data is the data that have been already collected by and readily available from other sources. Such data are cheaper and more quickly obtainable than the primary data and also may be available when primary data cannot be obtained at all. Advantages of Secondary data. It is economical. It saves efforts and expenses. It is time saving.

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Data Collection Methods & Tools: Advantages & Disadvantages

Data Collection Method Advantages Disadvantages; 1. Interview The interview is a meeting between an interviewer and interviewee. Interviews can be done face-to-face or via video conferencing tools. Accurate screening. The interviewee can’t provide false information such as gender, age, or race.

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Types of Statistical Data: Advantages, Limitations and

ADVERTISEMENTS: In this article, we propose to discuss the types, advantages, limitations, precautions and examples of statistical data. Types of Statistical Data: Information on any field, when expressed qualitatively and/or quantitatively, is called data and they are usually classified into two main cate­gories—primary and secondary data, depending on their origin or source. Information

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Sources of Secondary Data and its Advantages and Disadvantages

Aug 03, 2020· Data is an important element of any research. The quality of not data decides the quality of the outcome of the research. There are two types of data that a researcher uses to research something. The two types are primary data and secondary data.. The primary data is the data which is collected first hand by the research by conducting experiments, interviews, surveys, etc.

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Advantages and Disadvantages of Interview in Research

Advantages and Disadvantages of Interview in Research by Sociology Group Approaching the Respondent- according to the Interviewer’s Manual, the introductory tasks of the interviewer are: tell the interviewer is and whom he or she represents; telling him about what the study is, in a

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Primary Research Advantages And Disadvantages ~ I Answer 4 U

Collecting data using primary research is a costly proposition as marketer has to be involved throughout and has to design everything. 2) Time Consuming. Because of exhaustive nature of the exercise, the time required to do research accurately is very long as compared to secondary data, which can be collected in much lesser time duration.

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What are Primary Data Collection Methods? Business Jargons

Primary Data Collection Methods. A fresh data can be collected by using the following methods: Interview Method: It is the most widely used primary data collection methods wherein the interviewer asks questions either personally, or through mail or telephone from the respondents to obtain the insights of the problem under study.The researcher may either visit the respondent in person at his

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