Stats Chap 3

    Cards (16)

    • What is an outlier
      An extreme value that lies outside the overall pattern of the data
    • Common way to find the upper outlier
      Q3+k(Q3-Q1)
    • How to find boundary for lower outlier
      Q1-k(Q3-Q1)
    • What is the process of cleaning the data

      The process of removing anomalies from a data set
    • What does the x on a box plot represent

      Outlier
    • What does the vertical scale on a histogram represent

      frequency density
    • How to calculate frequency
      Frequency density x class width
    • How to form a frequency polygon
      Joining the middle of the top of each bar in a histogram with equal class widths
    • If the data has no outliers which should you use to compare the data and why
      Mean and standard deviation as the spread of the data is not being affected by anything
    • If the data has outliers, which should you use to compare the data and why

      Median and interquartile range as they aren’t affected as much by outliers
    • What does a histogram represent

      Continuous data
    • What do frequency polygons allow you to compare

      The spread and shape of different datasets on one graph
    • What are percentiles
      Measure of location that divides data sets into 100 equal parts
    • How to find the position of a percentile
      COVER IMAGE
    • What does it mean if the data is discrete
      Values that are only limited to certain numbers
    • What is a continuous variable
      When it can taken on an unlimited amount of values
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