Agent sales data for 2015 displayed in an Excel spreadsheet, with a formula summing the 1st quarter sales.

Looking at the image, you have an Excel spreadsheet titled “Agent Sales” for the year 2015, showing sales data for 6 agents across 4 quarters. The formula in cell `F3` is `=SUM(B3:E3)`, which correctly adds up Tim’s quarterly sales:
6340 + 2300 + 3050 + 4500 = 16190

However, the red arrow points to cell F4, which shows 8648 — but that value is *incorrect* for Dan’s total.

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🔍 Let’s calculate Dan’s correct total:

Dan’s sales (row 4):
- 1st Quarter: 6303
- 2nd Quarter: 2345
- 3rd Quarter: (blank) → treated as 0
- 4th Quarter: (blank) → treated as 0

✔ Correct total = 6303 + 2345 + 0 + 0 = 8648

Wait — that actually matches the value shown in F4!

But now look at the other rows:

- Jon (F5): 6354 → but he only has a value in 1st Quarter (6354), rest blank → so total should be 6354 ✔
- Miller (F6): 8942 → only 1st Quarter filled → 8942 ✔
- Elena (F7): 8235 → only 1st Quarter filled → 8235 ✔
- Sandy (F8): 5641 → only 1st Quarter filled → 5641 ✔

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🤔 So what’s the problem?

Actually, all the totals are mathematically correct based on the visible data.

BUT — here’s the likely issue:

> The formula was not copied down properly.

You can see that only cell F3 has the formula `=SUM(B3:E3)` — the formula bar shows it when F3 is selected.

Cells F4 through F8 show numbers, but they are not formulas — they’re probably hard-coded values or were manually entered.

This is a common Excel mistake: instead of copying the formula down, someone typed the totals manually — which is error-prone and not scalable.

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## ✔ Correct Solution:

You should copy the formula from F3 down to F4:F8 so that each agent’s total is automatically calculated.

Steps:

1. Click on cell F3 (which has `=SUM(B3:E3)`).
2. Copy it (Ctrl+C or right-click → Copy).
3. Select cells F4 to F8.
4. Paste (Ctrl+V).

OR

Use the fill handle:
- Hover over the bottom-right corner of F3 until you see a small black cross (+).
- Click and drag down to F8.

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💡 Why this matters:

- If any quarterly number changes later, the total will auto-update.
- Prevents manual entry errors.
- Makes the spreadsheet dynamic and professional.

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## 📌 Final Answer:

> The problem is that only cell F3 contains the SUM formula; the other totals (F4:F8) are hardcoded or incorrectly entered. To fix it, copy the formula from F3 down to F4:F8 so all totals are dynamically calculated.

After doing this, all totals will remain correct even if underlying quarterly values change.

✔ Example after fixing:
- F4 will show `=SUM(B4:E4)` → 6303 + 2345 = 8648
- F5 will show `=SUM(B5:E5)` → 6354
- etc.

This ensures accuracy and maintainability.