[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-466018-105":3,"doc-detail-466018-en":81,"detail-sidebar-cat-0-en-105":98},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","ap-statistics-practice-examination-4","AP Statistics Practice Examination 4","","Practice Examination 4 for AP Statistics covering multiple-choice problems on correlation and linear regression concepts, confidence intervals for proportions, median and interquartile range implications, interpreting cumulative frequency histograms, geometric probability for sequential trials, and weighted means across groups. Additional questions address goodness-of-fit chi-square calculations, probability for events using given joint and marginal values, sampling methods for estimating GPA, properties when population standard deviation is zero, and simulating precipitation sequences with random digits. The exam also includes hypothesis-test decision rules and regression output interpretation for significance between age and income.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/ap-statistics-practice-examination-4/466018/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/ap-statistics-practice-examination-4/466018.png","ImageObject",300,407,{"name":42,"@type":43},"adawds","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-26","2026-09-30",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",6,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"How does the exam test understanding of correlation and the correlation coefficient r?","Question",{"text":63,"@type":64},"It asks which statements about r are correct, focusing on what the sign and magnitude of r indicate and whether r measures only linear association.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What sampling and inference methods are evaluated in the practice questions?",{"text":68,"@type":64},"Questions cover confidence statements for population proportions, choosing appropriate sampling techniques to estimate average GPA, and interpreting regression significance using given output.",{"name":70,"@type":61,"acceptedAnswer":71},"How are probability and simulation problems used to assess statistical reasoning?",{"text":72,"@type":64},"The exam includes an event-order probability problem for a geometric-style scenario and a precipitation simulation based on random-number digits mapped to rainy or non-rainy days.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},466018,1790816232,{"code":4,"msg":82,"data":83},"success",{"doc_id":79,"user_id":84,"nickname":42,"user_avatar":85,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":86,"file_id":87,"file_url":88,"file_type":89,"file_size":90,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":91,"language":92,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":93,"faqs":94,"seo_title":95,"seo_description":12,"update_tm":96,"read_time":97},3985747872983,"https://ap-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d","Time:90 minutes  \n# AP Statistics PracticeExamination 4\n\nMultiple ChoiceStatisticsSection I  \n1.Which of the following statements is(are)correct?  \nI.Correlation makes no distinction between explanatory and responsevariables.  \nII.The sign of r reflects the strength of the association.II.r measures the strength of a linear relationship only.(A)I only(B)II only(C)II only(D)I and Ⅱ(E)I and III  \n2.In a random sample of 500 women,120 are college graduates.With whatconfidence can we assert that between 22%and 26%of women are col-lege graduates?(A)2%(B)4%(C)14.75%(D)24%(E)70.49%  \n3.The median of a distribution is 150 and the interquartile range is 50.Identify the statement(s)that must be true.  \nI.50%of the data are between 125 and 175.II.50%of the data are less than or equal to 150.III.75%of the data are greater than 125.(A)I only(B)II only(C)I and II only(D)II and IIIonly(E)I,II,and III  \n4.Twenty-five men were polled,and their annual incomes were recorded.The cumulative frequency histogram below shows the results.  \nCumulative Frequency  \n## Income\n\nWhich of the following statements can be made upon examination of thehistogram?  \n(A)The same number of men had incomes between $75,000 and$85,000 as between $85,000 and $95,000.  \n(B)The median income was $55,000.  \n(C)The mean income was less than the median income.  \n(D)The modal income was between $35,000 and $45,000.  \n(E)No men had incomes between $75,000 and $85,000.  \n5.Only 6 out of every 100 people have blood type O+.What is the proba-bility that in a random sample of individuals,the first person with typeo+blood will be the eighth person tested?(A)C(8,8)(0.06)⁸(0.94)°(B)C(8,1)(0.06)'(0.94)⁷(C)C(1,8)(0.06)'(0.94)⁷(D)(0.06)'(0.94)(E)(0.06)⁷(0.94)¹  \n6.Mr.DeVeaux teaches two sections of AP*Physics.He has 38 seniors inone section and 24 juniors in the other section.The overall mean forboth sections on the midterm exam was 87.If the junior section had amean of 92,what was the approximate mean for the senior section onthe midterm exam?(A)82.6(B)83.8(C)89.5(D)87.0(E)90.4  \n7.Which of the following is/are acceptable ways to express your decision atthe end of a hypothesis test?  \nI.Fail to reject H₀;accept H。II.Accept H₀;reject HIII.Reject H₀;accept H  \n(A)I only  \n(B)I only  \n(C)IIonly  \n(D)All are acceptable.  \n(E)None are acceptable.  \n8.The following table gives the percentage of nursing home residents byage.  \n\n| Age   | under 65   | 65-74   | 75-84   | 85 and older   |\n| --- | --- | --- | --- | --- |\n| Percentage   | 9.8   | 12   | 31.8   | 46.5   |\n\nIn a random sample of 150 families with a relative in a nursing home,thefollowing was the distribution of the relatives'ages:10 under 65,20 ages65-74,52 ages 75-84,and 68 ages 85 and older.If a goodness-of-fit testwere performed,what would be the value of the x²statistic?(A)0.541(B)0.707(C)2.156(D)2.810(E)28.110  \n9.If P(A)=0.7,P(not B)=0.4,and P(A and B)=0.5,find P(A or B).  \n(A)1.3  \n(B)0.6  \n(C)0.8  \n(D)0.1  \n(E)1.1  \n10.If you wanted to find the average GPA for seniors at your school whohave been accepted into college,what would be the most appropriatetechnique to use to gather the data?(A)Census  \n(B)Simple random sample(C)Stratified random sample(D)Systematic random sample(E)Controlled experiment  \n11.Given that a population has a standard deviation of 0,which of the fol-lowing statements must be true?  \nI.The standard deviation of a sample drawn from the population isalso 0.  \nII.The sample mean of a sample drawn from the population is also 0.III.The sample mean and median are equal for a sample drawn from thepopulation.(A)I only(B)I only(C)I and II only(D)I and II only(E)I,II,and II  \n12.A meteorologist wants to simulate 20 days of weather in a region wherethe probability of precipitation during the season being simulated is40%.She uses a random-number table as shown.2309105892210074390262973299406963091312If R represents a rainy day and N represents a day without rain,which ofthe following could be the meteorologist's s","cbCaivgp7ZzTAfEG","https://ap.wps.com/l/cbCaivgp7ZzTAfEG","pdf",1151292,24,"English","# Multiple Choice Statistics Section I\n## Questions 1-15","[{\"question\":\"How does the exam test understanding of correlation and the correlation coefficient r?\",\"answer\":\"It asks which statements about r are correct, focusing on what the sign and magnitude of r indicate and whether r measures only linear association.\"},{\"question\":\"What sampling and inference methods are evaluated in the practice questions?\",\"answer\":\"Questions cover confidence statements for population proportions, choosing appropriate sampling techniques to estimate average GPA, and interpreting regression significance using given output.\"},{\"question\":\"How are probability and simulation problems used to assess statistical reasoning?\",\"answer\":\"The exam includes an event-order probability problem for a geometric-style scenario and a precipitation simulation based on random-number digits mapped to rainy or non-rainy days.\"}]","AP Statistics Practice Examination 4 | PDF",1790770427,60,{"code":4,"msg":82,"data":99},[100,104,108,111,115,119,124,129,134,137,141],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":101,"show_sort_weight":102,"slug":103},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":105,"show_sort_weight":106,"slug":107},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":109,"slug":110},70,"exam",{"id":112,"doc_module":4,"doc_module_name":25,"category_name":113,"show_sort_weight":97,"slug":114},5,"Comic","comic",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},"Technology",50,"technology",{"id":120,"doc_module":4,"doc_module_name":25,"category_name":121,"show_sort_weight":122,"slug":123},7,"Healthcare",40,"healthcare",{"id":125,"doc_module":4,"doc_module_name":25,"category_name":126,"show_sort_weight":127,"slug":128},8,"Research & Report",30,"research-report",{"id":130,"doc_module":4,"doc_module_name":25,"category_name":131,"show_sort_weight":132,"slug":133},9,"Religion & Spirituality",20,"religion-spirituality",{"id":132,"doc_module":4,"doc_module_name":25,"category_name":135,"show_sort_weight":132,"slug":136},"World Cup","world-cup",{"id":138,"doc_module":4,"doc_module_name":25,"category_name":139,"show_sort_weight":138,"slug":140},10,"Lifestyle","lifestyle",{"id":142,"doc_module":4,"doc_module_name":25,"category_name":143,"show_sort_weight":112,"slug":144},19,"General","general"]