AVERAGE function in Google Sheets - Practice Problems & Coding Challenges

Challenge - 5 Problems

📊 Formula Result

intermediate

Calculate average ignoring empty cells

Given the values in cells A1 to A5 as 10, 20, , 40, 50 (where the third cell is empty), what is the result of the formula =AVERAGE(A1:A5)?

A 24

B 25

C 30

D 20

💡 Hint

Remember that empty cells are ignored in AVERAGE calculation.

AVERAGE sums the numbers 10 + 20 + 40 + 50 = 120 and divides by 4 (non-empty cells), so 120/4 = 30.

❓ Function Choice

intermediate

Choose the correct formula to average only positive numbers

You have numbers in B1:B6: 5, -3, 8, 0, -1, 7. Which formula correctly calculates the average of only the positive numbers?

A =AVERAGEIF(B1:B6, "<0")

B =AVERAGE(B1:B6>0)

C =AVERAGE(B1:B6, ">0")

D =AVERAGEIF(B1:B6, ">0")

💡 Hint

Use AVERAGEIF to filter values based on a condition.

AVERAGEIF with ">0" averages only numbers greater than zero, ignoring negatives and zero.

📊 Formula Result

advanced

AVERAGE with mixed data types

Cells C1 to C5 contain: 10, "text", 20, TRUE, 30. What is the result of =AVERAGE(C1:C5)?

A 20

B 15

C Error

D 25

💡 Hint

AVERAGE ignores text and logical values unless they are numbers.

Only numbers 10, 20, and 30 are counted. Sum is 60, count is 3, average is 20.

🎯 Scenario

advanced

Calculate average excluding zeros

You want to find the average of values in D1:D7 but exclude zeros from the calculation. Which formula should you use?

A =AVERAGE(D1:D7, "<>0")

B =AVERAGEIF(D1:D7, "<>0")

C =AVERAGEIF(D1:D7, "=0")

D =AVERAGE(D1:D7)-0

💡 Hint

Use AVERAGEIF with a condition to exclude zeros.

AVERAGEIF with "<>0" averages only cells not equal to zero.

❓ data_analysis

expert

Find the average of last 3 entries in a growing list

Column E has a list of numbers starting from E1 downwards. The list grows over time. Which formula calculates the average of the last 3 numeric entries in column E, assuming no blanks between them?

A =AVERAGE(OFFSET(E1, COUNTA(E:E)-3, 0, 3, 1))

B =AVERAGE(E1:E3)

C =AVERAGE(OFFSET(E1, COUNTA(E:E), 0, 3, 1))

D =AVERAGE(E:INDEX(E:E, COUNTA(E:E)-3))

💡 Hint

Use OFFSET with COUNTA to dynamically select last 3 cells.

COUNTA counts entries, OFFSET moves down to last 3 entries, AVERAGE calculates their mean.

Practice

1. What does the AVERAGE function do in Google Sheets?

easy

A. It adds all numbers and divides by the count of numbers.

B. It finds the biggest number in a list.

C. It counts how many numbers are in a list.

D. It multiplies all numbers together.

Solution

1. Step 1: Understand the purpose of AVERAGE

   The AVERAGE function sums all numeric values in a range and divides by how many numbers there are.

2. Step 2: Compare options with definition

   Only It adds all numbers and divides by the count of numbers. correctly describes this behavior.

3. Final Answer:

   It adds all numbers and divides by the count of numbers. -> Option A

4. Quick Check:

   AVERAGE = sum ÷ count [OK]

Hint: AVERAGE means sum numbers then divide by count [OK]

Common Mistakes:

• Thinking AVERAGE finds the biggest number
• Confusing AVERAGE with COUNT
• Assuming it multiplies numbers

2. Which of these is the correct way to write the AVERAGE formula for cells A1 to A5?

easy

A. =AVERAGE{A1:A5}

B. =AVERAGE[A1:A5]

C. =AVERAGE(A1:A5)

D. =AVERAGE A1:A5

Solution

1. Step 1: Recall correct formula syntax

   Google Sheets formulas use parentheses () to enclose cell ranges or arguments.

2. Step 2: Check each option

   Only =AVERAGE(A1:A5) uses parentheses correctly: =AVERAGE(A1:A5). Others use brackets, braces, or no parentheses, which are invalid.

3. Final Answer:

   =AVERAGE(A1:A5) -> Option C

4. Quick Check:

   Formulas need parentheses () [OK]

Hint: Use parentheses () for function arguments [OK]

Common Mistakes:

• Using square brackets [] instead of parentheses
• Using curly braces {} incorrectly
• Omitting parentheses

3. Given the values in cells A1=10, A2=20, A3=, A4="text", A5=30, what is the result of =AVERAGE(A1:A5)?

medium

A. Error

B. 15

C. 25

D. 20

Solution

1. Step 1: Identify numeric values in range

   Cells A1=10, A2=20, A5=30 are numbers; A3 is empty and A4 is text, both ignored by AVERAGE.

2. Step 2: Calculate average of numbers

   Sum = 10 + 20 + 30 = 60; Count = 3; Average = 60 ÷ 3 = 20.

3. Final Answer:

   20 -> Option D

4. Quick Check:

   Ignore empty/text, average numbers only [OK]

Hint: AVERAGE ignores empty cells and text [OK]

Common Mistakes:

• Including empty cells in count
• Including text as zero
• Expecting error due to text

4. The formula =AVERAGE(A1:A4, 10) returns an error. What is the likely cause?

medium

A. The syntax is incorrect; extra parentheses needed.

B. The formula is correct; error is elsewhere.

C. You cannot mix ranges and single numbers in AVERAGE.

D. You must separate arguments with semicolons, not commas.

Solution

1. Step 1: Verify formula syntax

   =AVERAGE(A1:A4, 10) is valid in Google Sheets; AVERAGE can take a range and a constant value as arguments.

2. Step 2: Determine error source

   Since the syntax is correct, the error must originate elsewhere, such as invalid data in A1:A4, cell references, or spreadsheet settings.

3. Final Answer:

   The formula is correct; error is elsewhere. -> Option B

4. Quick Check:

   AVERAGE(range, number) is valid [OK]

Hint: AVERAGE accepts ranges + numbers; check data/range [OK]

Common Mistakes:

• Assuming mixing ranges and numbers is invalid
• Using wrong argument separators
• Missing equal sign at start

5. You have sales data in cells B2:B10, but some cells contain text notes. Which formula correctly calculates the average sales ignoring text?

hard

A. =AVERAGE(B2:B10)

B. =SUM(B2:B10)/COUNTA(B2:B10)

C. =AVERAGEIF(B2:B10, ">0")

D. =AVERAGE(B2:B10, "text")

Solution

1. Step 1: Understand how AVERAGE handles text

   AVERAGE automatically ignores text and empty cells when calculating the average.

2. Step 2: Evaluate each option

   =AVERAGE(B2:B10) uses AVERAGE directly, which works correctly. =SUM(B2:B10)/COUNTA(B2:B10) counts text cells, causing wrong divisor. =AVERAGEIF(B2:B10, ">0") averages only numbers >0, excluding zeros. =AVERAGE(B2:B10, "text") includes text as argument, causing error.

3. Final Answer:

   =AVERAGE(B2:B10) -> Option A

4. Quick Check:

   AVERAGE ignores text automatically [OK]

Hint: Use AVERAGE directly; it skips text cells [OK]

Common Mistakes:

• Using COUNTA which counts text too
• Trying to filter numbers manually
• Adding text as argument causing errors