Introduction to Statistics Overview
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Questions and Answers

Why is data collection considered vital for any analysis?

  • To minimize the chances of getting insufficient or incorrect data (correct)
  • To increase the cost of analysis
  • To complicate the analysis process
  • To ensure incorrect conclusions are drawn

What is stated as a competitive advantage for any enterprise in the given text?

  • Using outdated data for making decisions
  • Processing and making insightful conclusions after data wrangling (correct)
  • Avoiding the use of data in decision-making
  • Misinterpreting data analysis results

Why is statistical analysis knowledge crucial for engineers as per the text?

  • To avoid using data for continuous improvement initiatives
  • To support various experiments and innovative projects using data (correct)
  • To complicate the engineering processes
  • To make errors in experiment results

What could be a consequence of incorrect processes in gathering data?

<p>Obtaining incorrect or insufficient data (C)</p> Signup and view all the answers

Why has the study of statistics grown enormously according to the text?

<p>Because statistics now covers many fields of endeavor (B)</p> Signup and view all the answers

What role does data play specifically in the engineering field according to the text?

<p>Essential in product and process characterization (B)</p> Signup and view all the answers

What is one of the main criteria for data that must be considered for research?

<p>Objective (D)</p> Signup and view all the answers

What is one of the features of a good question in a research questionnaire?

<p>Accurate responses (B)</p> Signup and view all the answers

Why is it important for a research problem to be significant and relevant to the present time?

<p>To have an impact on the situation and people intended for (D)</p> Signup and view all the answers

What is one of the key aspects of the study results that must be ensured?

<p>Practical and implementable (A)</p> Signup and view all the answers

Which type of question in a questionnaire provides only two options for the respondent to choose from?

<p>Two-way questions (B)</p> Signup and view all the answers

Why is defining the population/subjects to be considered in a study essential?

<p>To align with the objective and proper identification (C)</p> Signup and view all the answers

What type of variation results from conducting a physical count when distinct objects exist?

<p>Discrete variation (B)</p> Signup and view all the answers

Which term is used to describe a magnitude that can take any value within a specific interval?

<p>Continuous variation (C)</p> Signup and view all the answers

What does a discrete quantity result from?

<p>Counting (A)</p> Signup and view all the answers

In the context of measurements, what is the term used for the range of values rather than an exact value?

<p>Rounded number (B)</p> Signup and view all the answers

What does a continuous variation imply about the magnitude's possible values?

<p>It can take any value within a specific interval (A)</p> Signup and view all the answers

Why is the weight of a bag of rice typically given as a range instead of an exact value?

<p>As the correct weight can vary within a certain range (D)</p> Signup and view all the answers

What are significant digits?

<p>Digits that indicate the accuracy of a rounded number (D)</p> Signup and view all the answers

Why are numbers often rounded in business and economic data?

<p>For convenience in presentation and analysis (B)</p> Signup and view all the answers

When are significant digits applicable?

<p>Only to rounded numbers (C)</p> Signup and view all the answers

What does rounding numbers help achieve?

<p>Avoid unnecessary digits and maintain desired accuracy (D)</p> Signup and view all the answers

Why should the accuracy of final results be considered when calculations involve rounded numbers?

<p>Because rounded numbers may introduce inaccuracies (A)</p> Signup and view all the answers

What is the role of the Bureau of Customs in the context of data collection?

<p>Collects statistics on imports and exports (A)</p> Signup and view all the answers

Which statistical unit provides the government with data on employed and unemployed citizens?

<p>Bureau of Labor (C)</p> Signup and view all the answers

What is the primary purpose of data collection on economic subjects mentioned in the text?

<p>For political purposes (B)</p> Signup and view all the answers

Who proposed the well-known problem of points to Blaise Pascal?

<p>Chevalier de Mere (A)</p> Signup and view all the answers

What led to the origin of mathematics of probability, according to the text?

<p>Game of chance like dice and playing cards (A)</p> Signup and view all the answers

Which two mathematicians worked on solving the problem proposed by Chevalier de Mere?

<p>Blaise Pascal and Fermat (D)</p> Signup and view all the answers

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