Sampling Error And Nonsampling Error Ppt
Share Email Sampling Errors byNeeraj Kumar 1458views Errors in research byAbinesh Raja M 15708views Type i and type ii errors byp24ssp 7645views RESEARCH METHOD - SAMPLING byHafizah Hajimia 161803views Create a clipboard You just clipped your first slide! PopulationSampleSamplingFrameSampling ProcessWhat youwant to talkaboutWhat youactuallyobserve inthe dataInference 14. UniverseCensusSample PopulationSample FrameElements 11. this contact form
Types Of Sampling Errors In Research
Generated Thu, 27 Oct 2016 06:06:36 GMT by s_nt6 (squid/3.5.20) ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: http://0.0.0.3/ Connection Disadvantage High cost; low frequency of use Requires sampling frame Does not use researchers’ expertise Larger risk of random error thanstratified 27. Process by which the sample are taken frompopulation to obtain the informationSampling is the process of selecting observations (asample) to provide an adequate description andinferences of the populationSAMPLING 13. DisadvantageThe cost to reach an element to sample is veryhighUsually less expensive than SRS but not asaccurateEach stage in cluster sampling introducessampling error—the more stages there are, themore error there tends
Again thanks to all 3 years ago Reply Are you sure you want to Yes No Your message goes here Nosheela Nazir 1 month ago Ghulam Mohyuddin , Assistant Professor Purposive SamplingAlso called judgment SamplingThe sampling procedure in which an experiencedresearch selects the sample based on someappropriate characteristic of samplemembers… to serve a purposeWhen taking sample reject, people who do notfit Advantages of SRS Minimal knowledge of populationneeded External validity high; internalvalidity high; statistical estimationof error Easy to analyze data 26. How To Reduce Sampling Error Types of Sampling ErrorSample ErrorsNon Sample Errors 59.
Types of Simple Random SampleWith replacementWithout replacement 22. With replacementThe unit once selected has the chancefor again selectionWithout replacementThe unit once selected can not beselected again 23. Response ErrorsRespondent error (e.g., lying, forgetting, etc.)Interviewer biasRecording errorsPoorly designed questionnairesMeasurement errorA response or data error is any systematic biasthat occurs during data collection, analysis orinterpretation 63. Published in: Education, Technology 2 Comments 40 Likes Statistics Notes Full Name Comment goes here. 12 hours ago Delete Reply Spam Block Are you sure you want to Yes No Your Important that:- At planning stage, all potential non-sampling errors arelisted and steps taken to minimise them are considered. If data are collected from other sources, questionprocedures adopted for data collection, and
BYSHARADA(RESEARCH SCHOLAR)DEPTT. Difference Between Sampling Error And Nonsampling Error Types of Stratified Random SamplingProportionate Stratified Random SamplingEqual proportion of sample unit are selected from eachstrataDisproportionate Stratified Random SamplingAlso called as equal allocation technique and sample unitdecided according to analytical consideration Multistage Random SamplingSelect all schools; then sample withinschoolsSample schools; then measure allstudentsSample schools; then sample students 43. Your cache administrator is webmaster.
Sampling Error Pdf
DisadvantagePeriodic orderingRequires samplingframe 40. Non Sample ErrorsNon Response ErrorResponse ErrorNot Control by Sample Size 61. Types Of Sampling Errors In Research Advantage Assures representation of all groups insample population needed Characteristics of each stratum can beestimated and comparisons made Reduces variability from systematic 31. Sampling And Nonsampling Errors In Research Methodology The system returned: (22) Invalid argument The remote host or network may be down.
Probability SamplingEach and every unit of the population has theequal chance for selection as a sampling unitAlso called formal sampling or random samplingProbability samples are more accurateProbability samples allow us to weblink OF HOME SCIENCEMAHILA MAHA VIDYALAYABHU, VARANASISAMPLING: A Scientific Method ofData Collection 2. Disadvantage Requires accurate information onproportions of each stratum Stratified lists costly to prepare 32. Sampling ErrorSampling error refers to differencesbetween the sample and the populationthat exist only because of the observationsthat happened to be selected for thesampleIncreasing the sample size will reduce thistype of error Sampling And Nonsampling Errors Pdf
SamplePopulation ofInterestSamplePopulation SampleParameter StatisticWe measure the sample using statistics in order to drawinferences about the population and its parameters. 10. Sources Of Sampling Error Sample are chosen well based on thesome criteriaThere is a assurance of QualityresponseMeet the specific objectiveAdvantage 48. A simple random sampleis taken of the subgroups and then all members ofthe cluster selected are surveyed.Cluster Sampling 33.
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Systematic Random SamplingOrder all units in the sampling frame basedon some variable and then every nth numberon the list is selectedGaps between elements are equal andConstant There is periodicity.N= Sampling Interval Now customize the name of a clipboard to store your clips. The probability of each case being selected fromthe total population is not knownUnits of the sample are chosen on the basis ofpersonal judgment or convenienceThere are NO statistical techniques for measuringrandom Random Sampling Error Example Methods of SRS Tippet methodLottery MethodRandom Table 24.
Self selection SamplingIt occurs when you allow each case usuallyindividuals, to identify their desire to take partin the research you thereforePublicize your need for cases, either byadvertising through appropriate media or due to prestigeor competence implications, or due to sensitivity or socialundesirability of question respondent misunderstands the requirements lack of motivation to give an accurate answer “lazy” respondent gives an “average” answer AdvantageDemerit low cost Useful in specific circumstances Useful for locating rare populations Bias because sampling units not independent Projecting data beyond sample not justified 53. his comment is here Select another clipboard × Looks like you’ve clipped this slide to already.
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Generated Thu, 27 Oct 2016 06:06:36 GMT by s_nt6 (squid/3.5.20) Advantage Used when research budget limited Very extensively used/understood No need for list of population elements Introduces some elements of stratificationDemerit Variability and bias cannot be measuredor controlled Time Consuming Projecting Snowball SamplingThe research starts with a key person andintroduce the next one to become a chainMake contact with one or two cases in thepopulationAsk these cases to identify further cases. Stop Multistage sampling refers to sampling planswhere the sampling is carried out in stagesusing smaller and smaller sampling units at eachstage.Not all Secondary Units Sampled normally usedto overcome problems associated with ageographically
Types of Non probability Sampling Purposive Sampling Quota sampling (larger populations)Snowball samplingSelf-selection samplingConvenience sampling 46. The system returned: (22) Invalid argument The remote host or network may be down. Population Vs. Classification of SamplingMethodsSamplingMethodsProbabilitySamplesSimpleRandomClusterSystematic StratifiedNon-probabilityQuotaJudgmentConvenience SnowballMultistage 17.
Stratified Random SamplingPopulation is divided into two or more groupscalled strata, according to some criterion, such asgeographic location, grade level, age, or income,and subsamples are randomly selected from eachstrata.Elements within each ParameterThe variable of interestStatisticThe information obtained from the sampleabout the parameter 9. Characteristics of Good SamplesRepresentativeAccessibleLow cost 12. Generated Thu, 27 Oct 2016 06:06:36 GMT by s_nt6 (squid/3.5.20) ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: http://0.0.0.9/ Connection