Question

Writing Assignment # 1 Topic: Pros and Cons of Graphical Presentations Instructions observational study by observing and researching the Conduct an characteristics of the following methods of presenting data. Develop pros/cons checklist for each graphical presentation. a Your checklist should: 1. Provide a picture illustration of the graphical presentation 2. The data categories and levels of measurement for which that graphical presentation can 3. The advantages and disadvantages of the graphical presentation in conveying information to the user, visualization, ease in dis cerning measures of centers, spread and position, shape of the distribution for the data, etc. be used to present data. Graphical Presentation Frequency Table Bar Graph Histogram Pie graph 1. 2. 3. 4. Steam-leaf display 6, 5. Dot Plot 7 Pictogram 8. Frequency Polygon 9. Box plot 10.Pareto graph Note: You can choose any seven diagrams to discuss. If you decide to do more or all of them, the rest will count as bonus A
please do stem-leaf display,frequency polygon and pareto graph

Answer 1

stem leaf display

Stem and leaf plot is a type of data representation for numbers, usually is like a table with two columns. Tens digit in the left and units in the right. Stems is the label for left and leaves is the label for right.

The "stem" values are listed down, and the "leaf" values go right (or left) from the stem values. The "stem" is used to group the scores and each "leaf" indicates the individual scores within each group

Advantages Disadvantages Easy to keep Not very visually interesting and attractive Scores Might be messy after having too much data. Very simple to use Can handle an extreme amount of Data samples with very small range and variance can be difficult to break into meaningful or useful categories. data Can show range, minimum and maximum numbers easily

frequency polygon

A frequency polygon is a frequency diagram of grouped data and is an alternative to a histogram. The bars of the histogram are replaced by straight lines joining the mid-points of the tops of the bars.

Test Scores 45 40 35 30 25 20 15 10 5 44.5 54.5 64.5 74.5 84.5 94.5 104.5 Scores ouanbau

The advantage of a frequency polygon is that you can easily compare two sets of related data on the same chart – for example, the marks in a test for 50 men and 50 women.

Disadvantage is that if there are plenty of observations the it will be very difficult to understand.

Pareto diagram

The Pareto diagram is a graphical overview of process problems in ranking order from the most frequent, down to the least frequent. It illustrates the frequency of fault or defect types. Using a Pareto, you can decide which is the most serious or frequent offender.

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This diagram provides an easy way to compare before and after snapshots to verify that any process changes had the desired result.

one of the disadvantages of Pareto charts is that they provide no insight on the root causes