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AP Statistics Chapter 4 Review Voluntary Response Sample Participants choose or volunteer themselves not random very biased Convenience Sample.
We only include who is convenient to survey not truly random biased Simple Random Sample SRS Every person has an equal chance to be selected all the names are in one pot DONOT BREAK INTO GROUPS Stratified Random Sample.
Population is divided into groups or strata that are made up of similar individuals withineach group You do an SRS within each group Systematic Sample We sample every kth person after the first person is randomly selected Multi Stage Sample.
Done on a large scale combining other types of sampling methods you sample to chooseGROUPS then sample within the groups Cluster Sample Population is divided into groups that don t necessarily all look alike the clusters should mirror the population you sample to choose GROUPS then take a census within the.
Review of Chapter 4 Vocab Sampling Error Occurs in the act of choosing the sample Undercoverage certain members ofpopulation are left out .
Non Sampling Error Occurs after sample is chosen Non response cannot be surveyed or refuse toanswer question Response Bias.
Poorly Worded Questions Stratified Sampling One type of sampling iscalled stratified sampling Groups or classes insidea population that share a common characteristicare called strata Example In the population of all.
undergraduate college students some strata mightbe freshman sophomores juniors or seniors Other strata might be men or women or in statestudents or out of state students and so on In thismethod the population if divided into at least two.
distinct strata Then a simple random sample SRS of a certain size is drawn from each stratum Systematic Sampling This is anotherpopular method of sampling In this method itis assumed that the elements of the population.
are arranged in some natural sequential order Then we select a random starting point andselect every kth element for our sample Forexample to obtain a systematic sample of 20students going through the cafeteria line at.
lunch we could pick a random numberbetween say 0 and 10 Cluster Sampling Cluster sampling is a methodused extensively by government agencies and certainprivate research organizations In cluster sampling we.
begin by dividing the demographic area into sections Then we randomly select the sections or clusters Depending on the size of the cluster every member ofthe cluster or a random sample of members of thecluster is included in the sample For example in.
conducting a survey of school children in a large city we could first randomly select 30 schools and theninclude all the children from each school or a randomsample of children from each school Convenience Sampling This type of sampling simply uses.
results or data that are conveniently and readily obtained Insome cases this may be all that is available and in manycases it is better than no information at all However convenience sampling does run the risk of being severelybiased For instance consider a newsperson who wishes to get.
the opinions of the people about a proposed seat tax to beimposed on tickets to all sporting events The revenues fromthe seat tax will then be used to support the local symphony The newsperson stands in front of a classical music store atnoon and surveys the first five people coming out of the store.
who will cooperate This method of choosing a sample willproduce some opinions and perhaps some human intereststories but it certainly has bias Categorize the type of sampling methodused in each of the following situations .
simple random SRS stratified systematic cluster multi stage orconvenience To conduct a pre election opinion poll on the latestschool board election samples of 5 households from.
each telephone prefix first three digits of the phonenumbers in the voting district were called ANSWER Multi Stage Categorize the type of samplingmethod used in each of the following.
situations simple random SRS stratified systematic cluster multi stage orconvenience Toconduct a study on depression among the.
elderly a sample of 30 patients in one nursinghome was used ANSWER Convenience Categorize the type of sampling methodused in each of the following situations .
simple random SRS stratified systematic cluster multi stage orconvenience Subscribersto the magazine Sound Alive were assignednumbers Then a sample of 30 subscribers was selected.
by using a random number table The subscribers in thesample were invited to rate new compact disc playersfor a What a Subscribers Think column ANSWER Simple Random SRS Categorize the type of sampling.
method used in each of the followingsituations simple random SRS stratified systematic cluster multi stage orconvenience .
maintain quality control in a brewery every 20thbottle of beer coming off the production line wasopened and tested ANSWER Systematic Categorize the type of sampling method.
used in each of the following situations simple random SRS stratified systematic cluster multi stage orconvenience Tojudge the appeal of a proposed television sitcom a.
random sample of 10 people from each of threedifferent age categories were selected and thosechose were asked to rate a pilot show ANSWER Stratified Modern Managed Hospitals MMH is a national for profit chain.
of hospitals Management wants to survey patientsdischarged this past year to obtain patient satisfactionprofiles They wish to use a sample of such patients Severalsampling techniques are described below Categorize eachtechnique as .
simple random sample stratified sample multi stage systematic sample cluster sample or convenience Obtain a list of patients discharged from all MMH facilities Divide thepatients according to length of hospital stay 3 days or less 3 7 days 8 14 days more than 14 days Draw simple random samples from.
each group ANSWER Stratified Modern Managed Hospitals MMH is a national for profitchain of hospitals Management wants to survey patientsdischarged this past year to obtain patient satisfaction.
profiles They wish to use a sample of such patients Several sampling techniques are described below Categorize each technique as simple random sample stratified sample multi stage systematic sample cluster sample or.
convenience sample Obtain lists of patients discharged from all MMH facilities Number these patients and then use a random numbertable to obtain the sample ANSWER Simple Random SRS .
Modern Managed Hospitals MMH is a national for profit chain of hospitals Management wants tosurvey patients discharged this past year to obtainpatient satisfaction profiles They wish to use asample of such patients Several sampling techniques.
are described below Categorize each technique as simple random sample stratified sample multi stage systematic sample cluster sample or convenience sample Randomly select some MMH facilities from each of five.
geographic regions and then take random samples from eachof these hospital discharge lists ANSWER Multi Stage Modern Managed Hospitals MMH is a national for profit chain of hospitals Management wants to survey.
patients discharged this past year to obtain patientsatisfaction profiles They wish to use a sample ofsuch patients Several sampling techniques aredescribed below Categorize each technique as simple random sample stratified sample .
systematic sample cluster sample orconvenience sample Atthe beginning of the year instruct each MMH facility tosurvey every 500th patient discharged ANSWER Systematic.
Modern Managed Hospitals MMH is a national for profitchain of hospitals Management wants to survey patientsdischarged this past year to obtain patient satisfactionprofiles They wish to use a sample of such patients Several sampling techniques are described below .
Categorize each technique as simple random sample stratified sample multi stage systematic sample cluster sample orconvenience sample Randomly selected some MMH facilities and from each of.
the facilities ask every person from a discharge list theirsatisfaction level ANSWER Cluster Sample Modern Managed Hospitals MMH is a national for profit chain of hospitals Management wants to survey.
patients discharged this past year to obtain patientsatisfaction profiles They wish to use a sample ofsuch patients Several sampling techniques aredescribed below Categorize each technique as simple random sample stratified sample .
systematic sample cluster sample orconvenience sample Instructeach MMH facility to survey 10 discharged patients thisweek and send in the results .
ANSWER Convenience An important part of employee compensation is a benefitspackage that might include health insurance life insurance child car vacation days retirement plan parental leave bonuses etc Suppose you want to conduct a survey of.
benefit packages available in private businesses in Hawaii You want a sample size of 100 Some sampling techniquesare described below Categorize each technique as simple random SRS stratified systematic cluster multi stage or convenience .
Assign each business in the Island Business Directory a number andthen use a random number table to select the businesses to beincluded in the sample ANSWER Simple Random SRS An important part of employee compensation is a benefits.
package that might include health insurance life insurance child car vacation days retirement plan parental leave bonuses etc Suppose you want to conduct a survey ofbenefit packages available in private businesses in Hawaii You want a sample size of 100 Some sampling techniques.
are described below Categorize each technique as simple random SRS stratified systematic cluster multi stage or convenience Send a team of five research assistants to Bishop Street in downtown Honolulu Leteach assistant select a block or building and interview an employee from each.
business found Each researcher can have the rest of the day off after gettingresponses from 20 different businesses ANSWER Convenience An important part of employee compensation is a benefitspackage that might include health insurance life insurance .
child car vacation days retirement plan parental leave bonuses etc Suppose you want to conduct a survey ofbenefit packages available in private businesses in Hawaii You want a sample size of 100 Some sampling techniquesare described below Categorize each technique as .
simple random SRS stratified systematic cluster multi stage or convenience Usethe postal ZIP Codes to divide the state into regions Pick arandom sample of 10 ZIP Codes areas and then pick a randomsample of 10 businesses in each ZIP Code area .
ANSWER Multi Stage An important part of employee compensation is a benefitspackage that might include health insurance life insurance child car vacation days retirement plan parental leave bonuses etc Suppose you want to conduct a survey of.
benefit packages available in private businesses in Hawaii You want a sample size of 100 Some sampling techniquesare described below Categorize each technique as simple random SRS stratified systematic cluster multi stage or convenience .
Use the Island Business Directory Number all thebusinesses Select a stating place at random and then useevery 50th business listed until you have 100 businesses ANSWER Systematic An important part of employee compensation is a benefits.
package that might include health insurance life insurance child car vacation days retirement plan parental leave bonuses etc Suppose you want to conduct a survey ofbenefit packages available in private businesses in Hawaii You want a sample size of 100 Some sampling techniques.
are described below Categorize each technique as simplerandom SRS stratified systematic cluster multi stage or convenience Groupthe businesses according to type medical shipping retain manufacturing financial construction restaurant hotel tourism other .
Then select a random sample of 10 businesses from each business ANSWER Stratified An important part of employee compensation is a benefitspackage that might include health insurance life insurance child car vacation days retirement plan parental leave .
bonuses etc Suppose you want to conduct a survey ofAP Statistics â€“ Chapter 4 FRAPPY Practice #42011 AP Statistics Exam Question #3 An apartment building has nine floors and each floor has four apartments. The building owner wants to install new carpeting in eight apartments to see how well it wears before she decides whether to replace the carpet in the entire building.

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