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Stemplots (Stem-and-Leaf Plots) quiz

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  • What is one disadvantage of histograms when displaying quantitative data?
    Histograms do not allow us to see the specific values in the dataset.
  • What is a stemplot used for in data analysis?
    A stemplot displays quantitative data by showing both trends and the specific values in the dataset.
  • What is the first step in creating a stemplot from a data table?
    The first step is to write the data in increasing order.
  • Why is it important to arrange data in increasing order before making a stemplot?
    Arranging data in increasing order makes it easier to organize stems and leaves and ensures no data points are missed or duplicated.
  • What is the purpose of drawing a vertical line when making a stemplot?
    The vertical line separates the stems (on the left) from the leaves (on the right) in the stemplot.
  • In a stemplot, what is considered the 'leaf' of a data point?
    The leaf is always the rightmost digit of the data point.
  • How do you determine the 'stem' of a data point in a stemplot?
    The stem consists of all the digits to the left of the leaf in the data point.
  • If a data point is 105, what is its stem and leaf in a stemplot?
    The stem is 10 and the leaf is 5.
  • How should stems be listed in a stemplot?
    Stems should be listed in ascending order on the left side of the vertical line, with each stem listed only once.
  • Should you include stems in the stemplot that do not appear in your data?
    No, only include stems that actually appear in your dataset.
  • How are leaves added to a stemplot?
    A leaf is added for every data point, placed in the same row as its stem, and leaves are not separated by commas.
  • If two data points share the same stem and leaf, how are they represented in a stemplot?
    Each occurrence is represented by adding another leaf in the same row as the stem.
  • Why are commas not used to separate leaves in a stemplot?
    Commas are not used because each leaf is simply listed next to its stem for clarity and simplicity.
  • What does a completed stemplot allow you to do with your data?
    A completed stemplot allows you to visualize data distribution and identify trends while seeing individual data values.
  • What skill can you practice after constructing a stemplot?
    You can practice reading a stemplot and identifying trends in the dataset.