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Essential Concepts
Using Excel for Data Analysis
Columns of data can be quickly sorted in Excel using the sort function. You can choose ascending or descending order. If you want the entire row to sort based on a single column, make sure all of the data has been selected before sorting.
Filtering data will hide anything that doesn’t meet the given criteria. The hidden data has not been deleted and when the filter is removed it will reappear.
There are many functions in Excel that are worth exploring, but two primary function are IF and COUNTIF. The IF function will print a word (by default True) if a condition has been met by a selected cell and a different word (by default False) if the condition has not been met. Common conditions are to test if a cell is equal to a specific word or value or if the cell is more or less than a given value. COUNTIF can also test a condition, but rather than print a result it will count the number of cells that meet the condition and return the count as a number.
Automating Data Entry
Flash Fill and autofill are features built into Excel that make data entry easier. In the case of autofill, you can enter a pattern like Monday, Tuesday, Wednesday… then highlight and drag the pattern down while Excel autofills the remaining days of the week to future cells. Flash Fill will recognize a function performed in one cell and recommend the same function be applied to the cells nearby.
Sum and AutoSum will add all the values in the selected cells. If no cells are selected, autosum will guess what cells need to be added based on what cells are nearby (typically in a single column).
One of the most useful features of Excel is the ability to perform calculations to the different cells. By entering = into a cell, you can specify a formula that adds, subtracts, multiplies, and divides cells by other cells or by fixed values. Paired with Flash Fill we can perform multiple calculations very quickly.
Charts
Excel has many different styles of charts including line graphs, column charts, and pie graphs. To turn data into a chart, first organize the data into columns, then highlight the cells containing data and Insert a Chart. Charts can be edited by size, data, labels, format, and design.