[excel knowledge and skills] Excel data type

Enjoy the beautiful picture 2022/06/25

---

Excel The data types in include values 、 Text 、 Date time 、 Logical and error values

1. value type

Numerical values refer to all numerical forms representing quantities

for example , Student achievement 、 Individual height and weight 、 The output value and profit of the enterprise

The value can be positive , It can also be negative , And can participate in the calculation

2. Text type

Text usually refers to some non numerical characters and symbols

for example , Company name 、 Driving school test subjects 、 Employee name, etc

Many numbers that do not require numerical calculation can also be saved as text , Such as telephone number 、 Id card number 、 Bank card number, etc

When you enter text directly into a formula , Use a pair of half width double quotation marks ("") contain , As formula =A1="Hello World !"

3. Date and time type

stay Excel in , The date and time are in a special way " Sequence value " Stored in form

Enter the date and then set the cell number format to " routine ", The... Of the date will be displayed in the cell Sequence value

As a special numerical form , The date carries all the arithmetic functions of the value . for example , To calculate the number of days between two dates , You can directly enter two dates in different cells , In the 3 Cells use cell references and subtract

The date series value is an integer , The time series value is a decimal . The unit of value of a day is 1,1 Hours can be expressed as 1/24 God ,1 Minutes can be expressed as 1/(24*60) God , Every moment of the day can be represented by a sequence of decimal values

for example , At noon, 12:00:00 The sequence value of is 0.5( Half the day ),12:30:00 The sequence value of is approximately 0.520833

Combine the decimal part of the time with the integer part of the date , A complete date time point can be represented by a sequence value, for example ,2020 year 9 month 10 Noon 12:00:00 The sequence value of is 44084.5

4. Logical value type  

Logical values include TRUE( really ) and FALSE( false ) Two kinds of

hypothesis A1 Cells are arbitrary numbers , Use the formula "=A1 > 0", Can return to TRUE( really ) or FALSE( false )

When four operations are performed between logical values or between logical values and numerical values ,TRUE Is equivalent to 1,FALSE Is equivalent to 0

FALSE * FALSE = 0  

TRUE - 1 = 0

5. Error value type

The user is using Excel You may encounter some error messages in the process of , Such as #N/A、#VALUE!、#DIV/0 etc. , There are many reasons for these error values , Common error values and their causes are shown in the following table

Common error values and their causes

Wrong value	Cause of occurrence
#VALUE!	Text is entered when a number or logical value is required ,Excel It cannot be converted to the correct data type
#DIV/0!	Use 0 Value as divisor
#NAME?	A nonexistent name is used or the function name is misspelled
#N/A	In the lookup function , Could not find a match
#REF!	Deleted cells or worksheets that have references to other formulas , Invalidate the cell reference
#NUM!	In functions that require numeric arguments , An unacceptable parameter was used
#NULL!	1. The correct region operator is not used in the formula , An empty reference region is generated , For example, the formula "=SUM(A3:A10)" Misspelled as "=SUM(A3 A10)" 2. Cross operator is used between region references ( Space character ) To specify the intersection of two disjoint regions . for example , The formula "=SUM(A1:A5 C1:C3)",A1:A5 and C1:C3 No intersecting regions

#VALUE!

#DIV/0! 

#NAME? 

SUM() Misspelled function

#N/A

#REF!

#NUM!

Yes -2 take a square root

#NULL!