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Other Types of Graphs. Section 2.4. Represent data using Pareto charts, time series graphs, and pie graphs Draw and interpret a stem & leaf plot . Objectives.

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Objectives

Objectives


What is a pareto chart

Used pie graphsto represent a frequency distribution for a categorical variable and the frequencies are displayed by the heights of the contiguous vertical bars, which are arranged in order from highest to lowest.

What is a Pareto Chart?


How do i create a pareto chart from a categorical frequency distribution

  • STEP 1: Draw the x- and y-axes pie graphs

  • STEP 2: Label the x-axis using the qualitative categories (highest frequency to lowest frequency)

  • STEP 3: Label the y-axis using an appropriate scale that encompasses the high and low frequencies

  • STEP 4: Draw the contiguous vertical bars

How do I create a Pareto Chart from a categorical frequency distribution?


Example
Example pie graphs


Other types of graphs1

Other Types of Graphs


Other types of graphs2

Other Types of Graphs


Other types of graphs3

  • Stem & Leaf Plot wedges according to the percentage of frequencies in each category of the distribution.

    • Method for organizing data

    • Combination of sorting and graphing

    • Original Data is retained unlike with a grouped frequency distribution

  • Is a data plot that uses part of the data value as the “stem” (usually digit in highest place value position) and part of the data as the “leaf” to form groups or classes

  • When analyzing a stem & leaf plot, look for peaks and gaps in the distribution. Consider the shape of the distribution

Other Types of Graphs


How do i create a stem and leaf plot from raw data

  • STEP 1: Arrange data in order (not required, but makes things easier)

  • STEP 2: Separate the data according to the first digit (this is the “stem”)

  • STEP 3: Set up “table” with “stem” values in left-hand column and “leaf” in right hand column in ascending order

How do I create a stem and leaf plot from raw data?



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