Tools/materials: HP Night Wizard 6, windows 10, excel202 1.

1. Open or create an excel spreadsheet file.

2. Add an age column to calculate the age.

3. Enter the formula = =DATEDIF(D2, TODAY (), "y") in the cell of the age column, and calculate the age according to the date of birth. D2 represents the date of birth column data.

4. Press Enter to pull the cell and complete the data filling, thus completing the batch age evaluation calculation.

Matters needing attention in extracting age with excel

1. data format: ensure that the age data is in a consistent format, such as using number or date format. If the age is stored in text form, it may need to be converted to digital format.

2. Data accuracy: Ensure that there are no errors or abnormal values in the age data. For example, ensure that the age data is not negative or out of a reasonable range.

3. Data cleaning: Before extracting the age, it may be necessary to clean the data, delete or correct some irregular data. For example, delete blank cells, delete erroneous data, or handle missing values.

4. Formula or function: Use an appropriate Excel formula or function to extract age data. You can use date functions (such as year, month and day) to calculate the age, or use mathematical functions (such as DATEDIF) to calculate the age difference between two dates.

5. Data verification: verify whether the extracted age data meets expectations. You can use methods such as filtering, sorting or conditional formatting to check whether the extracted age data is correct.