Statistics and Probability
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Questions and Answers

What is the primary purpose of statistics in decision-making?

  • To present data in a visually appealing way
  • To assist in making a more effective decision (correct)
  • To make a decision based on emotions
  • To analyze numerical data only

    • What is the measure of central tendency that is most resistant to outliers?

  • Mode
  • Range
  • Mean
  • Median (correct)

    • Which measure of dispersion is most sensitive to outliers?

  • Interquartile Range
  • Standard Deviation
  • Variance
  • Range (correct)

    • What is the purpose of identifying the position of a data value in a data set using quartiles?

    <p>To understand the distribution of the data</p> Signup and view all the answers

    Which measure of shape is used to describe the asymmetry of a distribution?

    <p>Skewness</p> Signup and view all the answers

    What is the main difference between descriptive statistics and inferential statistics?

    <p>Descriptive statistics focuses on summarizing data, while inferential statistics focuses on making inferences about a population</p> Signup and view all the answers

    What is the formula to calculate the mean for raw data?

    <p>Sum of all values / Number of values</p> Signup and view all the answers

    What is the middle value of a dataset when it is arranged in ascending or descending order?

    <p>Median</p> Signup and view all the answers

    What is the position of the median in an even number of observations?

    <p>(n+1)/2</p> Signup and view all the answers

    What is the mode of the dataset 8, 3, 5, 7, 5, 3, 6, 5?

    <p>5</p> Signup and view all the answers

    What is the range of a dataset?

    <p>The difference between the highest and lowest values</p> Signup and view all the answers

    What are measures that give the spread of a distribution?

    <p>Measures of dispersion</p> Signup and view all the answers

    What is the primary purpose of statistics?

    <p>To analyze and interpret data</p> Signup and view all the answers

    What is a measure of central tendency that gives the middle value of a dataset when it is arranged in order?

    <p>Median</p> Signup and view all the answers

    What is the term for the collection of all possible individuals, objects, or measurements of interest?

    <p>Population</p> Signup and view all the answers

    What is the method of statistics that involves organizing, summarizing, and presenting data?

    <p>Descriptive Statistics</p> Signup and view all the answers

    What is the formula for calculating the mean of a dataset?

    <p>Sum of all observations divided by the number of observations</p> Signup and view all the answers

    What is the term for facts, especially numerical facts, collected together for reference or information?

    <p>Data</p> Signup and view all the answers

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