Waterfall charts in Excel - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a Waterfall chart used for in Excel?

A Waterfall chart shows how an initial value is affected by a series of positive and negative values, helping to visualize the cumulative effect step-by-step.

beginner

How do you start creating a Waterfall chart in Excel?

First, organize your data with categories and values. Then select the data and insert a Waterfall chart from the Insert Chart menu.

beginner

What does the 'Total' column represent in a Waterfall chart?

The 'Total' column shows the final cumulative value after all increases and decreases are applied.

intermediate

How can you mark a column as a 'Total' in an Excel Waterfall chart?

Right-click the column in the chart, choose 'Set as Total' to make it a subtotal or total, which changes its color and position.

beginner

Why is a Waterfall chart better than a simple bar chart for some data?

Because it clearly shows how each value adds or subtracts from the total, making it easier to understand changes over time or steps.

What type of data is best visualized with a Waterfall chart?

A Data showing cumulative increases and decreases

B Data with only positive values

C Data with no changes over time

D Data with unrelated categories

Waterfall charts are designed to show how values add or subtract to reach a total.

Which Excel menu do you use to insert a Waterfall chart?

A Formulas > Function Library

B Data > Sort & Filter

C Review > Comments

D Insert > Charts > Waterfall

Waterfall charts are found under the Insert tab in the Charts group.

How do you indicate a subtotal or total in a Waterfall chart?

A Right-click the column and select 'Set as Total'

B Change the cell color in the worksheet

C Add a new row with the word 'Total'

D Use a different chart type

Setting a column as total changes its color and shows it as a cumulative point.

What happens if you do not set any column as a total in a Waterfall chart?

A Excel will automatically set the last column as total

B The chart will not display

C The chart shows only increases and decreases without final totals

D The chart will show a pie chart instead

Without totals, the chart only shows step changes but no final cumulative value.

Which color usually represents decreases in a Waterfall chart by default?

A Green

B Red

C Blue

D Yellow

Decreases are typically shown in red to indicate negative changes.

Explain how to create a Waterfall chart in Excel from scratch.

Think about the steps from data preparation to chart insertion.

Describe why Waterfall charts are useful for financial reports.

Consider how money flows in and out over time.

Practice

1. What is the main purpose of a Waterfall chart in Excel?

easy

A. To show how an initial value changes step-by-step to a final value

B. To display data in a pie format

C. To compare values across categories side-by-side

D. To create a 3D visual effect for data

Solution

1. Step 1: Understand Waterfall chart purpose

   Waterfall charts visualize how an initial value changes through a series of positive and negative values to reach a final total.

2. Step 2: Compare with other chart types

   Pie charts show parts of a whole, bar charts compare categories, and 3D effects are visual styles, not purposes.

3. Final Answer:

   To show how an initial value changes step-by-step to a final value -> Option A

4. Quick Check:

   Waterfall charts = step-by-step changes [OK]

Hint: Waterfall = track increases and decreases stepwise [OK]

Common Mistakes:

• Confusing waterfall with pie or bar charts
• Thinking waterfall shows only totals, not changes
• Assuming waterfall charts use formulas directly

2. Which of these is the correct way to prepare data for a Waterfall chart in Excel?

easy

A. Use only positive values for all changes

B. Enter formulas directly into the chart

C. Use text labels only without numbers

D. Include both positive and negative values to show increases and decreases

Solution

1. Step 1: Identify data requirements for Waterfall charts

   Waterfall charts need positive values for increases and negative values for decreases to show step changes clearly.

2. Step 2: Eliminate incorrect options

   Using only positive values hides decreases, text labels alone don't create the chart, and formulas are not entered directly into charts.

3. Final Answer:

   Include both positive and negative values to show increases and decreases -> Option D

4. Quick Check:

   Positive and negative values = correct data setup [OK]

Hint: Use positive & negative numbers for changes [OK]

Common Mistakes:

• Using only positive numbers hides decreases
• Trying to put formulas inside the chart
• Using text without numbers for values

3. Given this data for a Waterfall chart:
Start: 100
Increase: 30
Decrease: -20
Increase: 10
What is the final total shown in the chart?

medium

A. 130

B. 120

C. 140

D. 150

Solution

1. Step 1: Add increases and decreases to start value

   Start with 100, add 30 (increase) = 130, subtract 20 (decrease) = 110, add 10 (increase) = 120.

2. Step 2: Calculate final total

   Final total after all changes is 120.

3. Final Answer:

   120 -> Option B

4. Quick Check:

   100 + 30 - 20 + 10 = 120 [OK]

Hint: Add positive and subtract negative values stepwise [OK]

Common Mistakes:

• Adding negative values instead of subtracting
• Ignoring decreases in calculation
• Mixing up order of operations

4. You created a Waterfall chart but it shows all bars starting from zero instead of connecting. What is the likely cause?

medium

A. Data does not include negative values

B. The data range is not formatted as a table

C. The 'Set as total' option is missing for subtotal rows

D. Chart type selected is not Waterfall

Solution

1. Step 1: Understand Waterfall chart bar connections

   Bars connect when Excel knows which rows are totals or subtotals, set by 'Set as total' option.

2. Step 2: Identify missing 'Set as total' setting

   If subtotal rows are not marked as totals, bars start from zero instead of continuing from previous values.

3. Final Answer:

   The 'Set as total' option is missing for subtotal rows -> Option C

4. Quick Check:

   Missing 'Set as total' = disconnected bars [OK]

Hint: Mark subtotal rows as totals to connect bars [OK]

Common Mistakes:

• Assuming negative values fix bar connections
• Thinking table format affects bar start points
• Choosing wrong chart type without checking data

5. You want to create a Waterfall chart showing monthly sales changes, but some months have zero change. How should you handle zero values to keep the chart clear?

hard

A. Leave zero values as is; Excel will show no bar for those months

B. Remove rows with zero values from the data

C. Replace zero values with small positive numbers

D. Convert zero values to negative numbers

Solution

1. Step 1: Understand zero values in Waterfall charts

   Zero values represent no change, so Excel shows no bar for those points, keeping the chart accurate and clear.

2. Step 2: Avoid altering zero values

   Replacing zeros with small positives or negatives misrepresents data; removing rows loses timeline context.

3. Final Answer:

   Leave zero values as is; Excel will show no bar for those months -> Option A

4. Quick Check:

   Zero values = no bar, keep data accurate [OK]

Hint: Keep zeros; chart shows no bar for no change [OK]

Common Mistakes:

• Changing zeros to small numbers distorts data
• Deleting zero rows breaks timeline
• Using negative numbers for zero changes