Subtotals in Excel - Real Business Scenario

Scenario Mode

👤 Your Role: You are a sales analyst at a retail company.

📋 Request: Your manager wants a report showing total sales by each product category and the overall total sales.

📊 Data: You have a sales data table with columns: Date, Product Category, Product Name, Units Sold, and Sales Amount.

🎯 Deliverable: Create a subtotal report that groups sales by Product Category and shows the sum of Sales Amount for each category and the grand total.

Sample Data

Date	Product Category	Product Name	Units Sold	Sales Amount
2024-06-01	Electronics	Headphones	10	500
2024-06-02	Electronics	Smartphone	5	2500
2024-06-03	Home Appliances	Blender	7	350
2024-06-04	Home Appliances	Microwave	3	600
2024-06-05	Furniture	Desk	2	400
2024-06-06	Furniture	Chair	4	200
2024-06-07	Electronics	Tablet	6	1800
2024-06-08	Home Appliances	Toaster	8	240

1

Step 1: Sort the data by the 'Product Category' column to group similar categories together.

Select all data rows and columns, then go to Data tab > Sort > Sort by 'Product Category' ascending.

Expected Result

Data rows are ordered so that all Electronics rows come first, then Furniture, then Home Appliances.

2

Step 2: Insert subtotals to sum 'Sales Amount' for each 'Product Category'.

Select the data range including headers, then go to Data tab > Subtotal. Use 'At each change in': Product Category, 'Use function': Sum, 'Add subtotal to': Sales Amount.

Expected Result

Excel inserts subtotal rows after each product category showing the sum of Sales Amount for that category.

3

Step 3: Verify the subtotal sums for each category.

Check the subtotal rows under Sales Amount column.

Expected Result

Electronics subtotal: 4800, Furniture subtotal: 600, Home Appliances subtotal: 1190.

4

Step 4: View the grand total of all sales at the bottom of the data.

Look at the last subtotal row which shows the grand total sum of Sales Amount.

Expected Result

Grand total sales amount is 6590.

Final Result

Product Category   Sales Amount
--------------------------------
Electronics        4800
  Headphones       500
  Smartphone       2500
  Tablet           1800
Furniture          600
  Desk             400
  Chair            200
Home Appliances    1190
  Blender          350
  Microwave        600
  Toaster          240
--------------------------------
Grand Total        6590

✓Electronics is the highest sales category with $4800 in sales.

✓Home Appliances have moderate sales totaling $1190.

✓Furniture has the lowest sales at $600.

✓Overall, total sales amount to $6590.

Bonus Challenge

Create a subtotal report that also shows the total units sold per product category along with sales amount.

Show Hint

In the Subtotal dialog, select both 'Units Sold' and 'Sales Amount' columns to add subtotals for both.

Practice

1. What does the SUBTOTAL function do in Excel?

easy

A. Calculates sums, averages, counts, and other operations on filtered or grouped data

B. Sorts data alphabetically or numerically

C. Removes duplicates from a list

D. Creates charts from selected data

Solution

1. Step 1: Understand the purpose of SUBTOTAL

   The SUBTOTAL function is designed to perform calculations like sum, average, or count on a range of data, especially useful when data is filtered or grouped.

2. Step 2: Compare with other options

   Sorting, removing duplicates, and creating charts are different Excel features unrelated to SUBTOTAL.

3. Final Answer:

   Calculates sums, averages, counts, and other operations on filtered or grouped data -> Option A

4. Quick Check:

   SUBTOTAL = Group calculations [OK]

Hint: SUBTOTAL works on filtered data for accurate group totals [OK]

Common Mistakes:

• Confusing SUBTOTAL with sorting or filtering
• Thinking SUBTOTAL removes duplicates
• Assuming SUBTOTAL creates charts

2. Which of the following is the correct syntax for the SUBTOTAL function to sum values in range A2:A10?

easy

A. =SUBTOTAL(1, A2:A10)

B. =SUBTOTAL(109, A2:A10)

C. =SUBTOTAL(9, A2:A10)

D. =SUBTOTAL(10, A2:A10)

Solution

1. Step 1: Identify function number for SUM

   In SUBTOTAL, function number 9 means SUM including hidden rows, while 109 means SUM ignoring hidden rows.

2. Step 2: Choose correct syntax for basic sum

   Since the question does not specify ignoring hidden rows, 9 is the standard function number for SUM.

3. Final Answer:

   =SUBTOTAL(9, A2:A10) -> Option C

4. Quick Check:

   SUM function number = 9 [OK]

Hint: Use 9 for SUM in SUBTOTAL unless ignoring hidden rows [OK]

Common Mistakes:

• Using 1 which is for AVERAGE
• Using 10 which is for COUNT
• Confusing 9 and 109 without context

3. Given the data in cells A2:A6 as {10, 20, 30, 40, 50} and rows 4 and 5 are manually hidden, what is the result of =SUBTOTAL(9, A2:A6)?

medium

A. 90

B. 60

C. 100

D. 150

Solution

1. Step 1: Understand SUBTOTAL with function number 9

   Function 9 sums visible and hidden rows, so it includes all values including manually hidden rows.

2. Step 2: Calculate sum of all values

   Sum of 10+20+30+40+50 = 150, but since rows 4 and 5 (values 40 and 50) are manually hidden, SUBTOTAL(9, ...) still includes them.

3. Step 3: Reconsider filtering effect

   Actually, SUBTOTAL with 9 includes manually hidden rows, so sum is 150. But question says rows 4 and 5 are manually hidden. SUBTOTAL(9, ...) includes hidden rows, so sum is 150.

4. Step 4: Check options

   150 is the total sum. 60 is sum of visible rows only (10+20+30=60).

5. Final Answer:

   150 -> Option D

6. Quick Check:

   SUBTOTAL(9) sums all rows including hidden [OK]

Hint: Function 9 sums all rows, even hidden ones [OK]

Common Mistakes:

• Assuming manually hidden rows are excluded with function 9
• Confusing function 9 with 109
• Adding only visible rows mistakenly

4. You want to sum only visible rows in range B2:B10, but your formula =SUBTOTAL(9, B2:B10) includes hidden rows. How do you fix it?

medium

A. Add a filter to the data

B. Change function number to 109: =SUBTOTAL(109, B2:B10)

C. Use =SUM(B2:B10) instead

D. Use =SUBTOTAL(1, B2:B10)

Solution

1. Step 1: Understand difference between function numbers 9 and 109

   Function 9 sums all rows including hidden, while 109 sums only visible rows, ignoring manually hidden rows.

2. Step 2: Fix formula to sum visible rows only

   Change function number from 9 to 109 to exclude hidden rows in the sum.

3. Final Answer:

   Change function number to 109: =SUBTOTAL(109, B2:B10) -> Option B

4. Quick Check:

   Use 109 to sum visible rows only [OK]

Hint: Use 109 to exclude hidden rows in SUBTOTAL sum [OK]

Common Mistakes:

• Using SUM which ignores filtering
• Using function number 1 which is AVERAGE
• Thinking adding a filter fixes formula automatically

5. You have sales data in column C with some rows filtered out and some manually hidden. You want to calculate the average sales of only visible rows and also count how many visible sales entries there are. Which formulas should you use?

hard

A. =SUBTOTAL(101, C2:C100) for average and =SUBTOTAL(103, C2:C100) for count

B. =SUBTOTAL(1, C2:C100) for average and =SUBTOTAL(2, C2:C100) for count

C. =AVERAGE(C2:C100) and =COUNT(C2:C100)

D. =SUBTOTAL(109, C2:C100) for average and =SUBTOTAL(110, C2:C100) for count

Solution

1. Step 1: Identify function numbers for average and count excluding hidden rows

   Function numbers 101 and 103 calculate average and count respectively, ignoring hidden rows.

2. Step 2: Confirm formulas for visible rows only

   Using =SUBTOTAL(101, C2:C100) gives average of visible rows; =SUBTOTAL(103, C2:C100) counts visible numeric entries.

3. Final Answer:

   =SUBTOTAL(101, C2:C100) for average and =SUBTOTAL(103, C2:C100) for count -> Option A

4. Quick Check:

   101 = average visible, 103 = count visible [OK]

Hint: Use 101 for average and 103 for count on visible rows [OK]

Common Mistakes:

• Using 1 and 2 which include hidden rows
• Using AVERAGE and COUNT ignoring filters
• Confusing function numbers 109 and 110 which are for SUM and COUNT ignoring hidden rows