统计代写|AP统计作业代写代考|Chapter Review Problems

Critical Thinking Sudoku is a puzzle consisting of squares arranged in 9 rows and 9 columns. The 81 squares are further divided into nine $3 \times 3$ square boxes. The object is to fill in the squares with numerals 1 through 9 so that each column, row, and box contains all nine numbers. However, there is a requirement that each number appear only once in any row, column, or box. Each puzzle already has numbers in some of the squares. Would it be appropriate to use a random-number table to select a digit for each blank square? Explain.
Critical Thinking Alisha wants to do a statistical study to determine how long it takes people to complete a Sudoku puzzle (see Problem 1 for a description of the puzzle). Her plan is as follows:
Download 10 different puzzles from the Internet.
Find 10 friends willing to participate.
Ask each friend to complete one of the puzzles and time him-or herself. Gather the completion times from each friend.

Describe some of the problems with Alisha’s plan for the study. (Note: Puzzles differ in difficulty, ranging from beginner to very difficult.) Are the results from Alisha’s study anecdotal, or do they apply to the general population?

Statistical Literacy You are conducting a study of students doing work-study jobs on your campus. Among the questions on the survey instrument are:
A. How many hours are you scheduled to work each week? Answer to the nearest hour.
B. How applicable is this work experience to your future employment goals?
Respond using the following scale: $1=$ not at all, 2 = somewhat, $3=$ very
(a) Suppose you take random samples from the following groups: freshmen, sophomores, juniors, and seniors. What kind of sampling technique are you using (simple random, stratified, systematic, cluster, multistage, convenience)?
(b) Describe the individuals of this study.
(c) What is the variable for question $\mathrm{A}$ ? Classify the variable as qualitative or quantitative. What is the level of the measurement?
(d) What is the variable for question B? Classify the variable as qualitative or quantitative. What is the level of the measurement?
(e) Is the proportion of responses “3 = very” to question B a statistic or a parameter?
(f) Suppose only $40 \%$ of the students you selected for the sample respond. What is the nonresponse rate? Do you think the nonresponse rate might introduce bias into the study? Explain.
(g) Would it be appropriate to generalize the results of your study to all work-study students in the nation? Explain.

统计代写|AP统计作业代写代考|Radio Talk Show: Sample Bias

Radio Talk Show: Sample Bias A radio talk show host asked listeners to respond either yes or no to the guestion, “Is the candidate who spends the most on a campaign the most likely to win?” Fifteen people called in and nine said yes. What is the implied population? What is the variable? Can you detect any bias in the selection of the sample?
Simulation: Identity Theft The U.S. Department of Justice examined all reported cases of identity theft for U.S. residents aged 16 or older. Their data show that of all the reported incidents of identity theft in a recent year, $40 \%$ involved existing credit card accounts. You are to design a simulation of seven reported identity thefts showing which ones involve existing credit card accounts and which ones do not. How would you assign the random digits 0 through 9 to the two categories “Does” and “Does not” involve existing credit card accounts? Use your random-digit assignment and the random-number table to generate the results from a random sample of seven identity thefts. If you do the simulation again, do you expect to get exactly the same results?
General: Type of Sampling Categorize the type of sampling (simple random, stratified, systematic, cluster, or convenience) used in each of the following situations.
(a) To conduct a preelection opinion poll on a proposed amendment to the state constitution, a random sample of 10 telephone prefixes (first three digits of the phone number) was selected, and all households from the phone prefixes selected were called.
(b) To conduct a study on depression among the elderly, a sample of 30 patients in one nursing home was used.
(c) To maintain quality control in a brewery, every 20 th bottle of beer coming off the production line was opened and tested.
(d) Subscribers to a new smart phone app that streams songs were assigned numbers. Then a sample of 30 subscribers was selected by using a random-number table. The subscribers in the sample were invited to rate the process for selecting the songs in the playlist.
(e) To judge the appeal of a proposed television sitcom, a random sample of 10 people from each of three different age categories was selected and those chosen were asked to rate a pilot show.
General: Gathering Data Which technique for gathering data (observational study or experiment) do you think was used in the following studies? Explain.
(a) The U.S. Census Bureau tracks population age. In 1900 , the percentage of the population that was 19 years old or younger was $44.4 \%$. In 1930 , the percentage was $38.8 \%$; in 1970 , the percentage was $37.9 \%$; and in 2000 , the percentage in that age group was down to $28.5 \%$ (Reference:
The First Measured Century, T. Caplow, L. Hicks, and B. J. Wattenberg).
(b) After receiving the same lessons, a class of 100 students was randomly divided into two groups of 50 each. One group was given a multiple-choice exam covering the material in the lessons. The other group was given an essay exam. The average test scores for the two groups were then compared.
General: Experiment How would you use a completely randomized experiment in each of the following settings? Is a placebo being used or not? Be specific and give details.
(a) A charitable nonprofit organization wants to test two methods of fundraising. From a list of 1000 past donors, half will be sent literature about the successful activities of the charity and asked to make another donation. The other 500 donors will be contacted by phone and asked to make another donation. The percentage of people from each group who make a new donation will be compared.

统计代写|AP统计作业代写代考|Student Life: Data Collection Project

I Student Life: Data Collection Project Make a statistical profile of your own statistics class. Items of interest might be
(a) Height, age, gender, pulse, number of siblings, marital status
(b) Number of college credit hours completed (as of beginning of term); grade point average
(c) Major; number of credit hours enrolled in this term
(d) Number of scheduled work hours per week
(e) Distance from residence to first class; time it takes to travel from residence to first class
(f) Year, make, and color of car usually driven
What directions would you give to people answering these questions? For instance, how accurate should the measurements be? Should age be recorded as of last birthday?
Census: Web Site Census and You, a publication of the Census Bureau, indicates that “Wherever your Web journey ends up, it should start at the Census Bureau’s site.” Find the Census Bureau’s web site as well as the site for FedStats, another extensive site offering links to federal data. The Census Bureau site touts itself as the source of “official statistics.” But it is willing to share the spotlight. The web site now has links to other “official” sources: other federal agencies, foreign statistical agencies, and state data centers. If you have access to the Internet, try the Census Bureau’s site.
Focus Problem: Fireflies Suppose you are conducting a study to compare firefly populations exposed to normal daylight/darkness conditions with firefly populations exposed to continuous light ( 24 hours a day). You set up two firefly colonies in a laboratory environment. The two colonies are identical except that one colony is exposed to normal daylight/darkness conditions and the other is exposed to continuous light. Each colony is populated with the same number of mature fireflies. After 72 hours, you count the number of living fireflies in each colony.
(a) Is this an experiment or an observation study? Explain.
(b) Is there a control group? Is there a treatment group?
(c) What is the variable in this study?
(d) What is the level of measurement (nominal, interval, ordinal, or ratio) of the variable?

AP统计代写

统计代写|AP统计作业代写代考|Critical Thinking

批判性思维数独是一个由 9 行 9 列排列的正方形组成的谜题。81个方格又分为九个3×3方盒。目标是用数字 1 到 9 填充方格，以便每列、每行和每框都包含所有 9 个数字。但是，要求每个数字在任何行、列或框中只出现一次。每个拼图的某些方块中已经有数字。使用随机数表为每个空白方块选择一个数字是否合适？解释。
批判性思维 Alisha 想要进行一项统计研究，以确定人们完成数独谜题需要多长时间（有关谜题的描述，请参见问题 1）。她的计划如下：
从网上下载 10 个不同的谜题。
找到10个愿意参与的朋友。
请每位朋友完成其中一个谜题并为他或她自己计时。收集每个朋友的完成时间。

描述 Alisha 的研究计划中的一些问题。（注意：谜题的难度不同，从初学者到非常困难。）Alisha 的研究结果是轶事，还是适用于一般人群？

统计素养你正在对在你的校园里勤工俭学的学生进行研究。调查工具的问题包括：
A. 您每周计划工作多少小时？回答最近的时间。
B. 这种工作经验对您未来的就业目标的适用程度如何？
使用以下量表回答：1=一点也不，2 = 有点，3=非常
(a) 假设您从以下组中随机抽取样本：大一、大二、大三和大四。您使用哪种抽样技术（简单随机、分层、系统、集群、多阶段、方便）？
(b) 描述本研究的个体。
(c) 问题的变量是什么一种? 将变量分类为定性或定量。测量水平是多少？
(d) 问题 B 的变量是什么？将变量分类为定性或定量。测量水平是多少？
(e) 对问题 B 的回答“3 = 非常”的比例是统计量还是参数？
(f) 仅假设40%您为样本选择的学生做出了回应。什么是不回复率？您认为不答复率可能会给研究带来偏见吗？解释。
(g) 将你的研究结果推广到全国所有勤工俭学的学生是否合适？解释。

统计代写|AP统计作业代写代考|Radio Talk Show: Sample Bias

电台脱口秀：偏见样本电台脱口秀主持人要求听众回答“是”或“否”的猜测，“在竞选中花费最多的候选人最有可能获胜吗？” 十五个人打来电话，九个人答应了。什么是隐含人口？变量是什么？您能在样本选择中发现任何偏差吗？
模拟：身份盗窃美国司法部审查了所有报告的 16 岁或以上美国居民身份盗窃案件。他们的数据显示，在最近一年报告的所有身份盗窃事件中，40%涉及现有的信用卡账户。你要设计一个模拟报告的七起身份盗窃事件，显示哪些涉及现有信用卡账户，哪些不涉及。您如何将随机数字 0 到 9 分配给涉及现有信用卡帐户的“是否”和“不”这两个类别？使用您的随机数字分配和随机数字表从七个身份盗窃的随机样本中生成结果。如果您再次进行模拟，您是否期望得到完全相同的结果？
一般：抽样类型对以下每种情况下使用的抽样类型（简单随机、分层、系统、整群或方便）进行分类。
(a) 为了对州宪法的拟议修正案进行选举前民意调查，随机抽取了 10 个电话前缀（电话号码的前三位），并呼叫了所选电话前缀中的所有家庭。
(b) 为了对老年人的抑郁症进行研究，使用了一个疗养院的 30 名患者的样本。
(c) 为了保持啤酒厂的质量控制，每 20 瓶从生产线上下来的啤酒都要打开并进行测试。
(d) 为流媒体歌曲的新智能手机应用程序的订阅者分配了号码。然后使用随机数表选择 30 个订阅者作为样本。样本中的订阅者被邀请对在播放列表中选择歌曲的过程进行评分。
(e) 为判断拟定电视情景喜剧的吸引力，从三个不同年龄组的每一个中随机抽取 10 人样本，并要求被选中的人对试播节目进行评分。
概述：收集数据您认为以下研究中使用了哪种数据收集技术（观察性研究或实验）？解释。
(a) 美国人口普查局追踪人口年龄。1900年，19岁或以下人口的百分比是44.4%. 1930年，这个百分比是38.8%; 1970年，这个百分比是37.9%; 而在 2000 年，该年龄组的百分比下降到28.5%（参考：
第一个测量世纪，T. Caplow、L. Hicks 和 BJ Wattenberg）。
(b) 上完相同的课后，一个班 100 名学生被随机分成两组，每组 50 人。一组接受了涵盖课程材料的多项选择题考试。另一组进行了论文考试。然后比较两组的平均考试成绩。
常规：实验您将如何在以下每种设置中使用完全随机的实验？是否使用安慰剂？要具体并提供详细信息。
(a) 一个慈善非营利组织想要测试两种筹款方法。在过去的 1000 名捐赠者名单中，有一半将被发送有关该慈善活动成功活动的文献，并被要求再次捐赠。将通过电话联系其他 500 名捐赠者，并要求他们再次捐赠。将比较每组进行新捐赠的人的百分比。

统计代写|AP统计作业代写代考|Student Life: Data Collection Project

I 学生生活：数据收集项目为您自己的统计课程制作统计资料。感兴趣的项目可能是
(a) 身高、年龄、性别、脉搏、兄弟姐妹数量、婚姻状况
(b) 完成的大学学分数量（截至学期开始时）；平均绩点
(c) 专业；本学期注册的学时
数 (d) 每周预定工作时数
(e) 从住所到头等舱的距离；从住所到头等舱所需的时间
(f) 通常驾驶的汽车的年份、品牌和颜色
您会给回答这些问题的人哪些指示？例如，测量应该有多准确？年龄应该记录到上一个生日吗？
Census: Web Site Census and You 是人口普查局的一份出版物，它指出“无论您的网络旅程结束于何处，都应该从人口普查局的站点开始。” 查找人口普查局的网站以及 FedStats 的网站，这是另一个提供联邦数据链接的广泛网站。人口普查局网站自诩为“官方统计数据”的来源。但它愿意分享聚光灯。该网站现在有其他“官方”来源的链接：其他联邦机构、外国统计机构和州数据中心。如果您可以访问互联网，请尝试人口普查局的网站。
焦点问题：萤火虫假设您正在进行一项研究，比较暴露于正常日光/黑暗条件下的萤火虫种群与暴露于连续光照（一天 24 小时）的萤火虫种群。您在实验室环境中建立了两个萤火虫群落。这两个菌落是相同的，只是一个菌落暴露在正常的日光/黑暗条件下，而另一个菌落暴露在连续光照下。每个殖民地都居住着相同数量的成熟萤火虫。72 小时后，您计算每个菌落中活萤火虫的数量。
(a) 这是一项实验还是一项观察研究？解释。
(b) 有对照组吗？有治疗组吗？
(c) 本研究中的变量是什么？
(d) 变量的测量水平（名义、区间、序数或比率）是什么？

Course Overview

AP Statistics is an introductory college-level statistics course that introduces students to the major concepts and tools for collecting, analyzing, and drawing conclusions from data. Students cultivate their understanding of statistics using technology, investigations, problem solving, and writing as they explore concepts like variation and distribution; patterns and uncertainty; and data-based predictions, decisions, and conclusions.

Course Content

Based on the Understanding by Design® (Wiggins and McTighe) model, this course framework provides a clear and detailed description of the course requirements necessary for student success. The framework specifies what students must know, be able to do, and understand, with a focus on three big ideas that encompass the principles and processes in the discipline of statistics. The framework also encourages instruction that prepares students for advanced coursework in statistics or other fields using statistical reasoning and for active, informed engagement with a world of data to be interpreted appropriately and applied wisely to make informed decisions.

The AP Statistics framework is organized into nine commonly taught units of study that provide one possible sequence for the course. As always, you have the flexibility to organize the course content as you like.

Unit	Exam Weighting (Multiple-Choice Section)
Unit 1: Exploring One-Variable Data	15%–23%
Unit 2: Exploring Two-Variable Data	5%–7%
Unit 3: Collecting Data	12%–15%
Unit 4: Probability, Random Variables, and Probability Distributions	10%–20%
Unit 5: Sampling Distributions	7%–12%
Unit 6: Inference for Categorical Data: Proportions	12%–15%
Unit 7: Inference for Quantitative Data: Means	10%–18%
Unit 8: Inference for Categorical Data: Chi-Square	2%–5%
Unit 9: Inference for Quantitative Data: Slopes	2%–5%

Course Skills

The AP Statistics framework included in the course and exam description outlines distinct skills that students should practice throughout the year—skills that will help them learn to think and act like statisticians.

Skill	Description	Exam Weighting (Multiple-Choice Section)
1. Selecting Statistical Methods	Select methods for collecting and/or analyzing data for statistical inference.	15%–23%
2. Data Analysis	Describe patterns, trends, associations, and relationships in data.	15%–23%
3. Using Probability and Simulation	Explore random phenomena.	30%–40%
4. Statistical Argumentation	Develop an explanation or justify a conclusion using evidence from data, definitions, or statistical inference.	25%–35%

统计代写请认准statistics-lab™. statistics-lab™为您的留学生涯保驾护航。统计代写|python代写代考

随机过程代考

在概率论概念中，随机过程是随机变量的集合。若一随机系统的样本点是随机函数，则称此函数为样本函数，这一随机系统全部样本函数的集合是一个随机过程。实际应用中，样本函数的一般定义在时间域或者空间域。 随机过程的实例如股票和汇率的波动、语音信号、视频信号、体温的变化，随机运动如布朗运动、随机徘徊等等。

贝叶斯方法代考

贝叶斯统计概念及数据分析表示使用概率陈述回答有关未知参数的研究问题以及统计范式。后验分布包括关于参数的先验分布，和基于观测数据提供关于参数的信息似然模型。根据选择的先验分布和似然模型，后验分布可以解析或近似，例如，马尔科夫链蒙特卡罗 (MCMC) 方法之一。贝叶斯统计概念及数据分析使用后验分布来形成模型参数的各种摘要，包括点估计，如后验平均值、中位数、百分位数和称为可信区间的区间估计。此外，所有关于模型参数的统计检验都可以表示为基于估计后验分布的概率报表。

广义线性模型代考

广义线性模型（GLM）归属统计学领域，是一种应用灵活的线性回归模型。该模型允许因变量的偏差分布有除了正态分布之外的其它分布。

statistics-lab作为专业的留学生服务机构，多年来已为美国、英国、加拿大、澳洲等留学热门地的学生提供专业的学术服务，包括但不限于Essay代写，Assignment代写，Dissertation代写，Report代写，小组作业代写，Proposal代写，Paper代写，Presentation代写，计算机作业代写，论文修改和润色，网课代做，exam代考等等。写作范围涵盖高中，本科，研究生等海外留学全阶段，辐射金融，经济学，会计学，审计学，管理学等全球99%专业科目。写作团队既有专业英语母语作者，也有海外名校硕博留学生，每位写作老师都拥有过硬的语言能力，专业的学科背景和学术写作经验。我们承诺100%原创，100%专业，100%准时，100%满意。

机器学习代写

随着AI的大潮到来，Machine Learning逐渐成为一个新的学习热点。同时与传统CS相比，Machine Learning在其他领域也有着广泛的应用，因此这门学科成为不仅折磨CS专业同学的“小恶魔”，也是折磨生物、化学、统计等其他学科留学生的“大魔王”。学习Machine learning的一大绊脚石在于使用语言众多，跨学科范围广，所以学习起来尤其困难。但是不管你在学习Machine Learning时遇到任何难题，StudyGate专业导师团队都能为你轻松解决。

多元统计分析代考

基础数据: $N$ 个样本， $P$ 个变量数的单样本，组成的横列的数据表
变量定性: 分类和顺序；变量定量：数值
数学公式的角度分为: 因变量与自变量

时间序列分析代写

随机过程，是依赖于参数的一组随机变量的全体，参数通常是时间。随机变量是随机现象的数量表现，其时间序列是一组按照时间发生先后顺序进行排列的数据点序列。通常一组时间序列的时间间隔为一恒定值（如1秒，5分钟，12小时，7天，1年），因此时间序列可以作为离散时间数据进行分析处理。研究时间序列数据的意义在于现实中，往往需要研究某个事物其随时间发展变化的规律。这就需要通过研究该事物过去发展的历史记录，以得到其自身发展的规律。

回归分析代写

多元回归分析渐进（Multiple Regression Analysis Asymptotics）属于计量经济学领域，主要是一种数学上的统计分析方法，可以分析复杂情况下各影响因素的数学关系，在自然科学、社会和经济学等多个领域内应用广泛。

MATLAB代写

MATLAB 是一种用于技术计算的高性能语言。它将计算、可视化和编程集成在一个易于使用的环境中，其中问题和解决方案以熟悉的数学符号表示。典型用途包括：数学和计算算法开发建模、仿真和原型制作数据分析、探索和可视化科学和工程图形应用程序开发，包括图形用户界面构建MATLAB 是一个交互式系统，其基本数据元素是一个不需要维度的数组。这使您可以解决许多技术计算问题，尤其是那些具有矩阵和向量公式的问题，而只需用 C 或 Fortran 等标量非交互式语言编写程序所需的时间的一小部分。MATLAB 名称代表矩阵实验室。MATLAB 最初的编写目的是提供对由 LINPACK 和 EISPACK 项目开发的矩阵软件的轻松访问，这两个项目共同代表了矩阵计算软件的最新技术。MATLAB 经过多年的发展，得到了许多用户的投入。在大学环境中，它是数学、工程和科学入门和高级课程的标准教学工具。在工业领域，MATLAB 是高效研究、开发和分析的首选工具。MATLAB 具有一系列称为工具箱的特定于应用程序的解决方案。对于大多数 MATLAB 用户来说非常重要，工具箱允许您学习和应用专业技术。工具箱是 MATLAB 函数（M 文件）的综合集合，可扩展 MATLAB 环境以解决特定类别的问题。可用工具箱的领域包括信号处理、控制系统、神经网络、模糊逻辑、小波、仿真等。

R语言代写	问卷设计与分析代写
PYTHON代写	回归分析与线性模型代写
MATLAB代写	方差分析与试验设计代写
STATA代写	机器学习/统计学习代写
SPSS代写	计量经济学代写
EVIEWS代写	时间序列分析代写
EXCEL代写	深度学习代写
SQL代写	各种数据建模与可视化代写

统计代写|AP统计作业代写代考|Critical Thinking

统计代写|AP统计作业代写代考|Radio Talk Show: Sample Bias

统计代写|AP统计作业代写代考|Student Life: Data Collection Project

统计代写|AP统计作业代写代考|Critical Thinking

统计代写|AP统计作业代写代考|Radio Talk Show: Sample Bias

统计代写|AP统计作业代写代考|Student Life: Data Collection Project

Course Overview

Course Content

Course Skills

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