DATA COLLECTION Business Statistics Math 122a DLSU-D Source: Elementary Statistics (Reyes‚ Saren) Methods of Data Collection 1. 2. 3. 4. 5. DIRECT or INTERVIEW METHOD INDIRECT or QUESTIONNAIRE METHOD REGISTRATION METHOD OBSERVATION METHOD EXPERIMENT METHOD DIRECT or INTERVIEW Use at least two (2) persons – an INTERVIEWER & an INTERVIEWEE/S – exchanging information. Gives us precise & consistent information because clarifications can be made. Questions not fully understood by the respondent
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is simple random sampling. Disney Studios(Movies and Music) Research approaches used for this product are observation the Disney movies and music‚ survey by online to the random viewers and listeners because used of purposive random sampling as a sample‚ qualitative measures technological devices and interviewed guidelines for interview as well. In this case we need moderator who is able to conduct a group discussion. Disney Media Network (Cable TV & Radio) Owing to the product characteristics
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prediction about the relationship between two or more variables Contains the IV and the DV and population about which the researcher intends to draw conclusions (IPAD) The population is the entire group of research interest from which a sample is drawn; the sample is a subsection of the population who participate in the research Eg “it is predicted that caffeine will improve the memory of adults.” Here the IV is caffeine ‚ the DV is memory and the population is adults Operationalized variables –
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research included defining the population from which the samples were collected. When it comes to the population and the different samples collected‚ the main goal is to focus on customers and provide outstanding services by conducting customer interviews‚ and surveys including group interviews of all ages. There are several methods that have taken place concerning collecting samples. The individual interviews we have collected were samples by applying surveys‚ from face to face interviews
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Psychology Homework Discuss the strengths and weaknesses of the Milgram obedience study. Should the study have taken place? Milgram’s study is a very controversial study as it broke many ethical guidelines and has many methodological issues‚ but it also had many strengths. One strength of the Milgram study on obedience is that the experiment was reliable as it can be replicated and the results are consistent. The fact that the experiment was a Lab experiment makes the study even more reliable
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CHAPTER THREE INTRODUCTION This chapter will examine the various methods and techniques for carrying out the study. It has included the research design‚ the population‚ the sample size‚ sampling techniques‚ the data collection instrument and the procedures for data analysis. 3.1 AREA OF STUDY The research obtained information from both primary and secondary sources of data for the purpose of this study. Primary sources: the research collected data by the conduction of interviews‚ administering of
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Experiment (6) Determination of ash content Aim: To determine the ash content in 5 samples of milk Principle: This experiment wills comparison between all samples. We will weight three times. First type the weight of crucible. The second is crucible and the sample the last about the weight of ash after removing from furnace. Apparatus: 1. clean crucibles 2. Analytical balance 3. Clean tongs 4. Tripod 5. Bunsen burner 6. Silica triangle Instruments: 1. Furnace Procedure:
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generalize from a sample to a population. For example‚ the average income of all families (the population) in India can be estimated from figures obtained from a few hundred (the sample) families. 6 Statistical Population s A Population is a collection of all distinct individuals or objects or items under study. The number of entities in a population‚ Called the Population Size‚ is denoted by N s A descriptive measure of a population is called a Parameter 7 Sample s A Sample is a part of
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test machine. b. Tabulate the results. c. Convert all readings to either Rb or Rc values. d. Apply the cylindrical correction factors for cylindrical specimens. 4. Using the hardness conversation chart‚ find the tensile strength of the steel samples. OPERATIONS OF HARDNESS TESTING EQUIPMENT The following operation guide is a general one.Follow it carefully and observe caution and care at every step of the operation.No motion of any controls should be abrupt or using too much force‚ both
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Worth area had telephones in their offices‚ thereby clearly defining their sampling frame. All samples were selected using the probability sampling method. A primary listing was selected by systematic sampling and sub-sample listing was selected by simple random sampling. The calculation of the sample size resulted in 384 samples. After the adjusted sample size was implanted‚ the new result was 382 samples from a population of 74‚789 that needed to be surveyed. (Exhibit A) The survey‚ however‚ excluded
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