CDA data analysis -- common knowledge points induction of Excel data processing

Excel The importance of , Daily data processing 、 analysis 、 Make a picture 、 Pivoting 、 Report management templates are inseparable Excel. among , Need to skillfully use PivotTables and common functions .

PivotTable ： Can quickly complete the right Summary of data to be analyzed 、 Screening 、 Sorting and other functions .

Common functions ： Excel Common functions in include association matching class functions 、 Calculation class function and logic operation class function ：

1. Association matching class function ：

• VLOOKUP（ Find the target , Find the range , The search range contains the return value column number , Exact matching or fuzzy matching ）： Used to find the contents of a table or area by row .
• INDEX（ Cell range , Select a row in the array , Select a column in the array [ Optional ]）： Used to return values or references to values in a table or range .
• MATCH（ The value to be matched , Search area ）： Used to search for an item in a cell range , Then returns the relative position of the item in the range of cells .
• OFFSET（ Cell references , The number of up or down rows referenced by the upper left cell , The number of columns from left to right referenced by the upper left cell , The row height of the reference to be returned , The column width of the reference to be returned ）： Returns the reference offset from the given reference .

2. Calculation class function ：

• SUM（ The first number to add , The second number to add ）： Sum of parameters .
• COUNT（ Cell reference range ）： Calculate the number of numbers in the parameter list .
• MAX（ Cell reference range ）： Return the maximum value in the parameter list .
• MIN（ Cell reference range ）： Return the minimum value in the parameter list .
• RAND（）： return 0 and 1 A random number between .
• ROUND（ The number to be rounded , The number of digits to be rounded ）： Round the number to the specified number of digits .

3. Logic operation class function ：

• IF（ To judge logic , The result is a true return value , The result is a false return value ）： Specify the logical detection to be performed .
• IFERROR（ Check for errors , Return value when formula calculation error ）： If the formula calculation is wrong , Then return the specified value , Otherwise, the formula result is returned .
• AND（ Logical conditions 1, Logical conditions 2[ Optional ]）： If all parameters are TRUE, Then return to TRUE, It is often used to extend other function calls that perform logical tests .