Write formulas and functions. These are the workflows people run in Excel to formulas, the busiest ones first — each with a prompt in four ways.
To add numbers in different cells, you use the SUM formula. For example, if you want to add values in cells A1, B1, and C1, the formula will be =SUM(A1,B1,C1). You can also use =A1+B1+C1 for simple addition.
Auditors often use this when doing Cost Validation, to quickly total up expenses from multiple sources.
SUM adds all the numbers in a range, while SUMIF adds numbers only if they meet a condition. SUMIF is useful for things like adding up only the sales from a certain region or category.
A Finance Manager might use SUMIF for Pricing Analysis, adding only costs that match a specific product code.
| Function | What it does | Best use |
|---|---|---|
| SUM | Adds all numbers in range | Total sales, overall expenses |
| SUMIF | Adds numbers meeting a condition | Add only approved invoices |
| SUMIFS | Adds numbers meeting multiple conditions | Add sales by region and month |
You can use the Error Checking feature or the IFERROR function to identify and manage errors. IFERROR lets you replace errors with a custom value or message, so your sheet stays clean.
This is essential during Formula Audit, especially for Compliance Managers who need to ensure accurate reports.
Use the COUNTA function in Excel to count all non-empty cells in a range. For example, =COUNTA(A1:A10) counts cells with any data, not just numbers.
Office Managers often need this for Data Calculation, such as counting completed tasks.
VLOOKUP helps you search for a value in one column and return a value from a different column in the same row. It's widely used for Record Linkage, like matching product codes to names.
Network Administrators might use this for linking user IDs to access rights.
Excel covers most basic and intermediate Statistical Analysis with built-in functions like AVERAGE, MEDIAN, STDEV, and more. For more complex analyses, such as advanced regressions or big datasets, specialized tools like R or Python may be better.
A Regulatory Affairs Analyst may use Excel for quick analysis, but switch to other tools for detailed statistics.
| Tool | Best for | Limitations |
|---|---|---|
| Excel | Basic/intermediate statistics | Limited advanced analytics |
| R | Complex, custom statistics | Learning curve, setup |
| Python | Automated, large datasets | Requires coding |
These errors happen when something is wrong with your formula. #VALUE! usually means a wrong data type, and #DIV/0! means you tried dividing by zero. Check your data and formula for typos or empty cells. Use IFERROR to handle errors gracefully.
This is common during Error Checking and should be fixed before sharing reports.
You can combine IF, AND, OR, and arithmetic functions to create a risk scoring formula. For example, use =IF(AND(A1="High",B1>80),"High Risk","Low Risk"). This helps in Risk Scoring tasks for managers.
Construction Managers often use this to flag high-risk projects quickly.
Formulas like ISNUMBER, ISTEXT, and data validation rules make sure that only correct data types or values go into the spreadsheet. This reduces errors and improves trust in reports.
Compliance Managers rely on these checks to meet regulatory requirements and to keep good data governance.
Use the Formula Auditing tools in the Formulas menu, such as Trace Precedents and Show Formulas. These help you see which cells use which formulas, and spot mistakes faster.
Architectural Project Managers often use these features for Formula Audit before project reviews.
You should use array formulas when you need to perform the same calculation on many values at once, like summing only even numbers or filtering a list. Dynamic arrays (like FILTER and UNIQUE) make this easier in modern Excel.
Executive Assistants may use them in Request Prioritization to auto-list unique requests.
List all cost items and use formulas like SUM, SUMPRODUCT, or simple multiplication to estimate total costs. For example, quantity times unit price. This is core to Cost Estimation.
Digital Campaign Managers use these formulas to estimate ad spend and returns.
Most common formulas work the same in both Excel and Google Sheets, but some advanced functions or add-ins are unique to each. Excel supports more data types and complex tasks, while Google Sheets offers better real-time collaboration.
Office Managers may choose based on the team's sharing needs and the complexity of work.
| Platform | Strengths | Limitations |
|---|---|---|
| Excel | Advanced formulas, large files | Paid license, slower online |
| Google Sheets | Easy sharing, real-time edit | Limits on file size, fewer add-ins |
Design Optimization formulas need to be flexible, easy to update, and clearly documented. Use cell references, not hard numbers, and add comments for others who may use the sheet. This way, your optimization can adapt as input values change.
AI tools and Excel's Formula Suggestions can generate or improve formulas based on your data and the job you describe. They are helpful for complex tasks, but it's a good idea to double-check the formulas they create.
For advanced Statistical Analysis or Data Validation, AI can suggest faster solutions, but always review the logic before using in important work.
Test your formula with different data and compare the results to manual calculations or known answers. Ask a colleague to review your approach. If your formula is easy to read, flexible, and gives correct results in all scenarios, it's likely a good solution.