Statistics: Histogram Creation & Analysis
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Questions and Answers

What is the most important characteristic of a unimodal distribution?

  • It has no peaks
  • It has a single distinct peak (correct)
  • It is always skewed to the right
  • It has multiple peaks
  • Which measure of central tendency is most affected by outliers in a dataset?

  • Mode
  • Median
  • Mean (correct)
  • Standard Deviation
  • What is the primary purpose of calculating the standard deviation of a dataset?

  • To determine the median of the dataset
  • To determine the mode of the dataset
  • To understand the amount of variation in the dataset (correct)
  • To determine the number of peaks in the dataset
  • What is the term for a distribution that has multiple peaks?

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

    Which of the following types of skewness is most likely to occur in a distribution with a long tail on the right side?

    <p>Positive skewness</p> Signup and view all the answers

    What is the primary cause of a skewed distribution?

    <p>The asymmetry of the distribution around the mean</p> Signup and view all the answers

    A dataset has a median of 50 and a mean of 70. What can be inferred about the distribution of the data?

    <p>The distribution is skewed to the right</p> Signup and view all the answers

    What is the purpose of calculating the standard deviation of a dataset?

    <p>To measure the spread or dispersion of the dataset</p> Signup and view all the answers

    A histogram with two distinct peaks is an example of a __________ distribution.

    <p>bi-modal</p> Signup and view all the answers

    What is the mean of the following dataset: 12, 15, 18, 20, 22, 25, 28, 30?

    <p>21.25</p> Signup and view all the answers

    A histogram is created with the following dataset: 10, 15, 20, 20, 25, 30, 30, 35, 40. What can be inferred about the mode of the dataset?

    <p>The mode is 20</p> Signup and view all the answers

    What is the standard deviation of the following dataset: 10, 12, 15, 18, 20, 22, 25?

    <p>4.58</p> Signup and view all the answers

    A histogram is created with the following dataset: 10, 20, 30, 40, 50, 60, 70, 80, 90. What can be inferred about the shape of the distribution?

    <p>The distribution is skewed to the right</p> Signup and view all the answers

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