Filtering data with AutoFilter in Excel - Practice Problems & Coding Challenges

Challenge - 5 Problems

📊 Formula Result

intermediate

What is the visible row count after applying this AutoFilter?

You have a table with 10 rows of sales data in columns A to D. You apply an AutoFilter on column C to show only rows where the value is greater than 100. Which option shows the correct count of visible rows after filtering?

Excel

Data in column C: 50, 120, 90, 130, 110, 80, 140, 70, 150, 60

A 4

B 6

C 5

D 7

💡 Hint

Count how many values in column C are greater than 100.

Only the values 120, 130, 110, 140, and 150 are greater than 100, so 5 rows remain visible after filtering.

❓ Function Choice

intermediate

Which function helps count visible rows after filtering?

After applying an AutoFilter on a data range, you want to count how many rows are visible (not hidden). Which Excel function should you use?

A COUNTA(range)

B COUNT(range)

C SUM(range)

D SUBTOTAL(3, range)

💡 Hint

Look for a function that ignores hidden rows.

SUBTOTAL with function number 3 counts visible non-empty cells, ignoring filtered-out rows.

🎯 Scenario

advanced

Filter data to show only sales between $100 and $200

You have a sales table with amounts in column B. You want to use AutoFilter to show only rows where sales are between $100 and $200 inclusive. Which filter criteria should you apply?

A Filter column B with 'Greater Than or Equal To' 100 and 'Less Than or Equal To' 200

B Filter column B with 'Equals' 100 and 'Equals' 200

C Filter column B with 'Less Than' 100 or 'Greater Than' 200

D Filter column B with 'Does Not Equal' 100 and 'Does Not Equal' 200

💡 Hint

Think about how to include all values from 100 up to 200.

Using 'Greater Than or Equal To' 100 and 'Less Than or Equal To' 200 filters the range inclusively between those values.

❓ data_analysis

advanced

Identify the error in this AutoFilter setup

You want to filter a list of products to show only those starting with 'A'. You apply AutoFilter with the criteria 'Begins With' set to 'a'. However, no rows appear after filtering. What is the most likely reason?

A The filter is case-sensitive and 'a' does not match 'A'

B The filter was applied to the wrong column

C The data contains no products starting with 'A'

D AutoFilter does not support 'Begins With' criteria

💡 Hint

Check if the filter was applied to the correct column.

If the filter is applied to a column without product names, no rows will match the criteria.

🧠 Conceptual

expert

What happens to formulas referencing filtered rows?

You have a table with formulas summing values in column D. After applying an AutoFilter that hides some rows, what will the formula =SUM(D2:D20) show?

A Sum of all values in D2:D20, including hidden rows

B Sum of only visible rows in D2:D20

C Sum of only hidden rows in D2:D20

D An error because some rows are hidden

💡 Hint

Regular SUM does not ignore hidden rows.

The SUM function adds all values regardless of filtering. To sum only visible rows, use SUBTOTAL with function number 9.

Practice

1. What does the AutoFilter feature in Excel primarily do?

easy

A. It hides rows that don't match your selected criteria.

B. It deletes rows that don't match your selected criteria.

C. It changes the data in the cells to match your criteria.

D. It copies filtered data to a new sheet automatically.

Solution

1. Step 1: Understand AutoFilter purpose

   AutoFilter is used to hide rows that don't meet the filter criteria, not delete or change data.

2. Step 2: Compare options with AutoFilter behavior

   Only hiding rows matches what AutoFilter does; deleting or copying data is not automatic.

3. Final Answer:

   It hides rows that don't match your selected criteria. -> Option A

4. Quick Check:

   AutoFilter hides rows = A [OK]

Hint: AutoFilter hides, it never deletes data [OK]

Common Mistakes:

• Thinking AutoFilter deletes rows
• Confusing filtering with copying data
• Assuming AutoFilter changes cell values

2. Which of the following is the correct way to apply AutoFilter in Excel?

easy

A. Right-click any cell and choose Delete Filter.

B. Select your data range, then go to Data tab and click Filter.

C. Type =FILTER() in a cell to activate AutoFilter.

D. Use the Home tab and click Sort to apply AutoFilter.

Solution

1. Step 1: Recall how to activate AutoFilter

   AutoFilter is applied by selecting data and clicking Filter under the Data tab.

2. Step 2: Check each option's correctness

   Only Select your data range, then go to Data tab and click Filter. correctly describes the steps; others describe unrelated actions or functions.

3. Final Answer:

   Select your data range, then go to Data tab and click Filter. -> Option B

4. Quick Check:

   Data tab > Filter = B [OK]

Hint: Filter button is under Data tab, not Home [OK]

Common Mistakes:

• Confusing FILTER function with AutoFilter
• Looking for filter options in Home tab
• Trying to delete filter instead of applying

3. You have a table with a column "Status" containing values: "Complete", "Pending", "In Progress". After applying AutoFilter and selecting only "Pending", what will you see?

medium

A. The entire table will be copied to a new sheet.

B. All rows will be visible but "Pending" rows highlighted.

C. Rows with "Complete" and "In Progress" will be deleted.

D. Only rows where Status is "Pending" will be visible.

Solution

1. Step 1: Understand filtering by one value

   Selecting "Pending" in AutoFilter shows only rows matching "Pending" and hides others.

2. Step 2: Eliminate incorrect options

   Highlighting or deleting rows or copying table does not happen automatically with AutoFilter.

3. Final Answer:

   Only rows where Status is "Pending" will be visible. -> Option D

4. Quick Check:

   Filter shows matching rows only = D [OK]

Hint: Filter shows matching rows, hides others [OK]

Common Mistakes:

• Thinking filtered rows get deleted
• Expecting highlighting instead of hiding
• Assuming filter copies data automatically

4. You applied AutoFilter but the dropdown arrows do not appear on your header row. What is the most likely reason?

medium

A. You did not select the header row before applying the filter.

B. Your data contains empty rows inside the range.

C. AutoFilter only works on tables, not ranges.

D. You need to restart Excel to activate AutoFilter.

Solution

1. Step 1: Check selection before applying AutoFilter

   AutoFilter dropdowns appear on the selected header row; missing selection causes no arrows.

2. Step 2: Evaluate other options

   Empty rows inside data or restarting Excel do not prevent dropdown arrows; AutoFilter works on ranges too.

3. Final Answer:

   You did not select the header row before applying the filter. -> Option A

4. Quick Check:

   Select header row first = C [OK]

Hint: Always select header row before applying filter [OK]

Common Mistakes:

• Assuming AutoFilter needs tables only
• Thinking Excel restart fixes filter issues
• Ignoring selection step before filtering

5. You have a sales table with columns: Date, Region, Sales. You want to see only sales from "East" region in January 2024. How do you apply AutoFilter correctly?

hard

A. Use the FILTER function in a new sheet with criteria Region="East" and Date in January.

B. Sort the table by Region then manually delete rows not from "East" or January.

C. Apply filter on Region column selecting "East" and on Date column selecting dates from 01/01/2024 to 01/31/2024.

D. Apply filter only on Date column for January; Region filter is not needed.

Solution

1. Step 1: Apply multiple filters to narrow data

   Use AutoFilter dropdowns on both Region and Date columns to select "East" and January dates.

2. Step 2: Eliminate incorrect methods

   Sorting and deleting is manual and risky; FILTER function is different; filtering only Date misses Region filter.

3. Final Answer:

   Apply filter on Region column selecting "East" and on Date column selecting dates from 01/01/2024 to 01/31/2024. -> Option C

4. Quick Check:

   Filter both columns for exact data = A [OK]

Hint: Filter all needed columns to get precise results [OK]

Common Mistakes:

• Filtering only one column when multiple needed
• Deleting rows instead of filtering
• Confusing FILTER function with AutoFilter