Slicers (list, dropdown, between) in Power BI - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a slicer in Power BI?

A slicer is a visual filter that lets users select values to filter data on a report page easily.

beginner

What are the three common slicer types in Power BI?

The three common slicer types are List, Dropdown, and Between (for numeric or date ranges).

beginner

How does a 'Between' slicer work?

A 'Between' slicer lets users select a range between two values, such as dates or numbers, to filter data within that range.

intermediate

When should you use a Dropdown slicer instead of a List slicer?

Use a Dropdown slicer when you have many values to save space and keep the report clean, as it shows a compact list users can expand.

intermediate

What is a best practice for accessibility when using slicers?

Ensure slicers have clear labels, keyboard navigation support, and sufficient color contrast for all users.

Which slicer type allows selecting a range between two values?

A Checkbox

B Dropdown

C List

D Between

The 'Between' slicer lets users pick a range between two values, such as dates or numbers.

What is the main advantage of using a Dropdown slicer?

A Saves space on the report

B Filters by date range

C Allows multiple selections only

D Shows all values expanded

Dropdown slicers save space by hiding the list until clicked, keeping the report clean.

Which slicer type is best for filtering categorical data with few values?

A Between

B Dropdown

C List

D Numeric range

List slicers show all values and work well for categorical data with few options.

How can you improve accessibility for slicers?

A Add clear labels and keyboard support

B Use only colors to show selection

C Hide slicers from screen readers

D Use very small font sizes

Clear labels and keyboard navigation help all users interact with slicers effectively.

What happens when you select a value in a slicer?

A It changes the report theme

B It filters the report data based on selection

C It exports data to Excel

D It resets all visuals

Selecting a slicer value filters the report data to show only matching results.

Explain the differences between List, Dropdown, and Between slicers in Power BI.

Think about how each slicer displays options and what kind of data they filter.

Describe best practices for using slicers to create user-friendly and accessible reports.

Consider both usability and accessibility for all users.

Practice

1.

What is the main purpose of a slicer in Power BI?

easy

A. To import data from external sources

B. To create calculated columns

C. To write DAX formulas

D. To filter report data visually and interactively

Solution

1. Step 1: Understand slicer functionality

   Slicers are visual tools that let users filter data on reports easily by selecting values.

2. Step 2: Compare options to slicer purpose

   Only To filter report data visually and interactively describes filtering data visually and interactively, which matches slicer use.

3. Final Answer:

   To filter report data visually and interactively -> Option D

4. Quick Check:

   Slicer = Visual filter [OK]

Hint: Slicers filter data visually, not for calculations [OK]

Common Mistakes:

• Confusing slicers with data import tools
• Thinking slicers create calculations
• Assuming slicers write DAX formulas

2.

Which slicer type should you use to let users select a range of dates?

easy

A. Between slicer

B. List slicer

C. Dropdown slicer

D. Checkbox slicer

Solution

1. Step 1: Identify slicer types for date ranges

   Between slicers allow users to pick a start and end value, ideal for date or numeric ranges.

2. Step 2: Eliminate other slicer types

   List and dropdown slicers select single or multiple discrete values, not ranges. Checkbox slicer is not a standard type.

3. Final Answer:

   Between slicer -> Option A

4. Quick Check:

   Date range = Between slicer [OK]

Hint: Use between slicer for numeric or date ranges [OK]

Common Mistakes:

• Choosing list or dropdown for ranges
• Confusing checkbox slicer with dropdown
• Not knowing between slicer exists

3.

Given a dropdown slicer on a "Category" column with values: "A", "B", "C", what happens if the user selects "B"?

medium

A. The report filters to show rows where Category is blank

B. The report shows all rows except those where Category = "B"

C. The report filters to show only rows where Category = "B"

D. The report shows an error because dropdown slicers can't filter text

Solution

1. Step 1: Understand dropdown slicer behavior

   Dropdown slicers filter the report to show only the selected value(s) from the column.

2. Step 2: Apply selection "B" to filter

   Selecting "B" filters the data to rows where Category equals "B" only.

3. Final Answer:

   The report filters to show only rows where Category = "B" -> Option C

4. Quick Check:

   Dropdown slicer selection = Filtered data [OK]

Hint: Dropdown slicer shows only selected value's data [OK]

Common Mistakes:

• Thinking it excludes selected value
• Assuming it filters blanks
• Believing dropdown slicers can't filter text

4.

You created a between slicer on a numeric "Sales" column but it shows no slider or range. What is the likely problem?

medium

A. Between slicers only work on date columns

B. The "Sales" column is stored as text, not numeric

C. The report page is filtered to zero rows

D. The slicer type is set to dropdown instead of between

Solution

1. Step 1: Check data type for between slicer

   Between slicers require numeric or date data types to show a range slider.

2. Step 2: Identify issue with "Sales" column

   If "Sales" is text, the slicer cannot create a numeric range slider, causing no slider to appear.

3. Final Answer:

   The "Sales" column is stored as text, not numeric -> Option B

4. Quick Check:

   Between slicer needs numeric/date type [OK]

Hint: Check column data type if between slicer shows no slider [OK]

Common Mistakes:

• Assuming between slicers only work on dates
• Not verifying slicer type setting
• Ignoring data type mismatch

5.

You want users to select multiple product categories but keep the slicer compact in the report. Which slicer type and setting should you choose?

hard

A. Dropdown slicer with multi-select enabled and single select off

B. Between slicer on the category column

C. List slicer with multi-select enabled and single select off

D. List slicer with single select enabled

Solution

1. Step 1: Understand slicer types for multi-select and compactness

   Dropdown slicers take less space than list slicers and support multi-select when single select is off.

2. Step 2: Evaluate options for multi-select and compactness

   List slicers with multi-select are larger; between slicers don't apply to categories; single select disables multi-select.

3. Final Answer:

   Dropdown slicer with multi-select enabled and single select off -> Option A

4. Quick Check:

   Compact multi-select = Dropdown slicer [OK]

Hint: Use dropdown slicer with multi-select enabled and single select off for compact multiple picks [OK]

Common Mistakes:

• Choosing list slicer for compactness
• Using between slicer on text categories
• Enabling single select disables multi-select