Reading and writing cell values in Google Sheets - Dashboard Guide

Dashboard Mode - Reading and writing cell values

Dashboard Goal

Track monthly sales and update sales targets easily to see progress.

Sample Data

Month	Sales	Target
January	1200	1500
February	1800	1500
March	1600	1500
April	2000	1500
May	1700	1500

Dashboard Components

• Total Sales: Cell D2 with formula =SUM(B2:B6) shows total sales for all months.
• Average Sales: Cell D3 with formula =AVERAGE(B2:B6) shows average monthly sales.
• Sales Target: Cell D4 with formula =C2 reads January target value to demonstrate reading a cell value.
• Update Target: Cell C7 where user can write a new target value to update all monthly targets using formula =IF(ISBLANK($C$7),1500,$C$7) in cells C2:C6.
• Target Update Formula: Cells C2:C6 have formula =IF(ISBLANK($C$7),1500,$C$7) to read the new target value from C7 or use default 1500.

Dashboard Layout

+----------------------+------------------+
|      Sales Data      |   Summary Cards  |
| +------------------+ | +--------------+ |
| | Month | Sales   | | | Total Sales  | |
| | Target|         | | | =SUM(B2:B6)  | |
| +------------------+ | +--------------+ |
|                      | +--------------+ |
|                      | | Average Sales| |
|                      | | =AVERAGE(B2:B6)| |
|                      | +--------------+ |
|                      | +--------------+ |
|                      | | Current Target| |
|                      | | =C2 (Jan Target)| |
|                      | +--------------+ |
+----------------------+------------------+
+------------------------------------------+
| Update Target: [ C7 ] (User input cell)  |
+------------------------------------------+

Interactivity

User changes the value in cell C7 to update the sales target for all months. The formula in C2:C6 reads this new value and updates the target cells automatically. Summary cards recalculate based on sales data but targets update dynamically based on user input.

Self Check

If you enter 1800 in cell C7, what will be the new target value shown in cell D4 and cells C2:C6? How does this affect the dashboard?

Key Result

Dashboard shows monthly sales, total and average sales, and lets user update sales targets dynamically.

Practice

1. What does the cell reference A1 mean in Google Sheets?

easy

A. It is a formula to add values.

B. It refers to the first sheet in the workbook.

C. It refers to the cell in column A and row 1.

D. It is a function to read data.

Solution

1. Step 1: Understand cell references

   Cell references like A1 point to a specific cell by column letter and row number.

2. Step 2: Identify column and row

   A1 means column A and row 1, the top-left cell in the sheet.

3. Final Answer:

   It refers to the cell in column A and row 1. -> Option C

4. Quick Check:

   Cell reference A1 = column A + row 1 [OK]

Hint: Column letter + row number = cell address [OK]

Common Mistakes:

• Thinking A1 is a formula
• Confusing cell reference with sheet name
• Assuming A1 is a function

2. Which of the following is the correct way to write a formula that adds cells A1 and B1 in Google Sheets?

easy

A. SUM(A1+B1)

B. A1+B1

C. =SUM(A1 B1)

D. =A1+B1

Solution

1. Step 1: Recognize formula syntax

   Formulas start with an equal sign (=) in Google Sheets.

2. Step 2: Use correct addition syntax

   To add two cells, use =A1+B1 with plus sign and no extra spaces or missing symbols.

3. Final Answer:

   =A1+B1 -> Option D

4. Quick Check:

   Formula starts with = and uses + for addition [OK]

Hint: Always start formulas with = sign [OK]

Common Mistakes:

• Omitting the = sign
• Using SUM without commas
• Writing formula without operators

3. If cell A1 contains 5 and cell B1 contains 10, what will be the result in cell C1 after entering the formula =A1*B1?

medium

A. 50

B. 15

C. 510

D. Error

Solution

1. Step 1: Identify values in cells

   Cell A1 has 5 and B1 has 10.

2. Step 2: Calculate multiplication

   =A1*B1 multiplies 5 by 10, resulting in 50.

3. Final Answer:

   50 -> Option A

4. Quick Check:

   5 * 10 = 50 [OK]

Hint: Use * for multiplication in formulas [OK]

Common Mistakes:

• Adding instead of multiplying
• Concatenating numbers as text
• Forgetting = sign

4. A user types the formula =SUM(A1 B1) in cell C1. What is wrong with this formula?

medium

A. SUM cannot be used with cell references.

B. Missing comma between cell references.

C. Formula should not start with = sign.

D. Cell references must be lowercase.

Solution

1. Step 1: Check SUM function syntax

   SUM requires arguments separated by commas, like SUM(A1, B1).

2. Step 2: Identify missing comma

   The formula uses a space instead of a comma between A1 and B1, causing an error.

3. Final Answer:

   Missing comma between cell references. -> Option B

4. Quick Check:

   SUM(A1, B1) needs commas [OK]

Hint: Separate arguments with commas in functions [OK]

Common Mistakes:

• Using spaces instead of commas
• Removing = sign
• Using lowercase cell references (not required)

5. You want to write a formula in cell C1 that sums the values from A1 to A5 and then multiplies the result by the value in B1. Which formula should you enter in C1?

hard

A. =SUM(A1:A5)*B1

B. =SUM(A1:A5+B1)

C. =SUM(A1:A5)*SUM(B1)

D. =SUM(A1:A5*B1)

Solution

1. Step 1: Sum the range A1 to A5

   Use SUM(A1:A5) to add all values from A1 through A5.

2. Step 2: Multiply the sum by B1

   Multiply the sum by B1 using *B1 outside the SUM function.

3. Final Answer:

   =SUM(A1:A5)*B1 -> Option A

4. Quick Check:

   Sum range then multiply by B1 [OK]

Hint: Use colon for ranges and * for multiplication [OK]

Common Mistakes:

• Adding B1 inside SUM instead of multiplying
• Multiplying inside SUM causing wrong calculation
• Using multiple SUM functions unnecessarily