3 Replies Latest reply on Oct 1, 2018 3:52 AM by Chris McClellan

    Graphs Usage

    Nizam farooq

      I would like to understand the advantages and disadvantages of all graphs with real time scenarios. Also, I need to know 'when to use which charts'. It would be great if anybody shares your thoughts (in detail)

        • 1. Re: Graphs Usage
          meenu choudhary

          Hi Nizam,

           

          There are lots of wonderful article on this topic. To stat with, below is the chart that will give a basic idea of when to use which chart:

           

           

           

          You can refer below links for more details description on this topic:

           

          https://www.tableau.com/learn/whitepapers/which-chart-or-graph-is-right-for-you

          Data Visualization – How to Pick the Right Chart Type?

          What Are Common Chart Types and How to Use Them

          1 of 1 people found this helpful
          • 2. Re: Graphs Usage
            suman kumar

            Hi Nizam farooq

             

            There are numbers of good articles on this but here I have given you a short information about it.

             

             

            There are many different types of data presentation.  Four of those types include tables, bar graphs, line graphs and pie charts. 

            A table lists data in columns.  Tables can be useful if trying to show comparisons between certain types of data, such as what services each department provides.  However, tables may be less effective if trying to show a trend over time, such as how many patients entered an emergency department.  That would be better demonstrated using a line graph.

             

            A line graph plots data points along a number line.  Line graphs can help show changes in the data over time or demonstrate trends.  A disadvantage of a line graph is that one particular data point cannot be effectively evaluated using this method.  That may be better done with a bar graph.

             

            Bar graphs compare data at a point in time and assist the viewer in comparing different types of data.  For example, if someone would want to see what day of the week was busiest for the emergency department, that would best be illustrated by a bar graph.  A disadvantage to a bar graph is also that it does not demonstrate trends over time as well as line graph.

             

            Advantage of Bar:

            • Show each data category in a frequency distribution
            • Display relative numbers/proportions of multiple categories
            • Summarize a large amount of data in a visual, easily intepretable form
            • Make trends easier to highlight than tables do
            • Estimates can be made quickly and accurately
            • Permit visual guidance on accuracy and reasonableness of calculations
            • Accessible to a wide audience

            Disadvantage of Bar:

            • often require additional explanation
            • fail to expose key assumptions, causes, impacts and patterns
            • can be easily manipulated to give false impressions

             

            A pie chart may be used in a similar fashion to a bar graph.  An advantage of the pie chart is it shows the parts of a whole.  Using the emergency department example, it would show the week as a whole and the percentage of patients entering the emergency department each day of the week.  A disadvantage to a pie chart is that too many variables may make it difficult to read. 

             

             

            Here I have attached two images as well. Please take a look.

             

            Screen Shot 2018-10-01 at 4.01.41 PM.png

            Screen Shot 2018-10-01 at 4.01.58 PM.png

             

            Please Mark Correct and Helpful if it works for you.

             

            Best

            Suman

            • 3. Re: Graphs Usage
              Chris McClellan

              This is a very good reference

               

              Tableau Public