Formulas in Excel: 

How to create a formula in Excel?

Every formula in Excel begins with an equal sign (=). You can use the formulas that are all ready saved in Excel or you can add the word of the opperation you want to resolve for example:  

- Sum

- Average

- Min

- Max

- Mode

A formula can be a combination of numbers or cells.

For example to sum:  

1. Select a cell (A18)

2. Put the "=" sign. 

3. Add the word Sum

4. Use a parentheses to begin the operation. 

5. Drag the elements or cells you want to sum. 

6. Close using another parentheses. 

7. Hit enter to see the result. 

Type of graphs and charts: 

 Bar Chart

This chart shows all the differences between the data you entered; it is an easier way to compare values and information.

Line Chart

Line graphs are really useful because it is really easy to notice changes in values that vary a lot. It is an easier way to represent the change of values, like temperature or data in a period of time.

 XY Scatter Plot Graphs

Scatter Plot Graphs show the relationship among the values in a certain data series or two groups of numbers in one series of xy coordinates. They are really useful to organize scientific data.

 Excel Pie Charts

 It represents the percentage or proportional data of the information you have. It is a way to organize percentages because you can notice how much you have of certain thing in a really easy way to understand. 

Area Charts

The Area Chart is useful when you need to emphasize in the magnitude of change (temperature, speed, air conditions, population,work, profit) over time.

Doughnut charts

 The Doughnut Charts display the information or data in rings, each ring represents a data series. It also represents the relationship of certain parts of the information entered. It can contain more data series, than the other graphs.

Radar Charts

A radar chart is useful to compare the values of data. It shows the changes of relative values to a center point.  (All the values are centered on one specific point)

Surface Charts

A surface chart is used when you are trying to find combinations between the information and data you have. It can be done between two sets of data.

Column Charts

    

A column chart shows information/data that is changed over a period of time. It is a really easy way to compare information.

Bubble Chart

 The Bubble Chart compares three values; the size of each bubble indicates the value of the variable. It can be represented with a 3-D visual effect.

Stock Charts

The Stock Charts are normally used for stock price data and also for scientific data. It can also represent changes during a period of time.

Cylinder, Cone, or Pyramid Charts

  

The cylinder, cone, or Pyramid Charts are like bar/column graphs but  you can add effect to the column or bars.

Bar Graph: 

Pie Graph: 

Bubble Graph: 

How to add a graph or chart?

1. Select the cells you would like to use for the graph or chart. 

2. Select Insert form the Menu Bar and then choose the type of graph you would like to use. 

3. Modify the information and the graph as you want. 

Charts: 

Formulas: