BUSA6004-2023-Quiz-1

QuizÂ by Hanlin Shang

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5 questions

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- Q1Which of the following is CORRECT?In data science, we are interested in drawing conclusions about populationIn data science, the population is impossible to defineIn data science, we are only interested in the the relationship that holds for the data sample because that is the only evidence we haveIn data science, it is not possible to draw conclusions about population since population is too large90s
- Q2Which of the following is CORRECT?The main steps in data analytics are to first identify the population, then collect data on the whole population, then analyze the data and make decisionsThe main steps in data analytics are to first determine the sampling method, then collect the data, then analyze the data and make decisionsThe main steps in data analytics are to first get a set of data, then formulate questions based on that data set, then analyze the data and make decisionsThe main steps in data analytics are to first formulate quantitative questions, then find the data that can be used to answer those question, then analyze the data and make decisions90s
- Q3Which of the following is INCORRECT?To draw conclusions about population, we need a data sample collected by random samplingTo draw conclusions about population, we need a data sample collected by cluster samplingTo draw conclusions about population, we need a data sample collected by quota samplingTo draw conclusions about population, we need a data sample collected by stratified random sampling90s
- Q4Which of the following is INCORRECT?Quota sampling is a method that gives unbiased samplesIn an unbiased sample, each individual in the population has equal chance of appearing in that sampleAn unbiased sample must be collected from a random populationTo draw conclusions about population, we need unbiased samples90s
- Q5Which of the following is INCORRECT?None of the aboveThe central location of a data set can be summarized using mean or median or modeThe shape of the data can be summarized and visualized by a histogramThe second quartile is the same as the median90s