Power BI | Parameters exercise | Use parameters to show only certain crime statistics

This exercise is provided to allow potential course delegates to choose the correct Wise Owl Microsoft training course, and may not be reproduced in whole or in part in any format without the prior written consent of Wise Owl.

You can learn how to do this exercise if you attend one of more of the courses listed below!

Software ==> Power BI  (91 exercises)
Version ==> Latest update
Topic ==> Parameters  (5 exercises)
Level ==> Average difficulty
Classroom ==> Advanced Power BI  /  Fast track Power BI
Online ==> Advanced Power BI  /  Fast track Power BI
Before you can do this exercise, you'll need to download and unzip this file (if you have any problems doing this, click here for help).

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Create a new Power BI Desktop file, and load the Excel workbook from the folder above.  Use this to create a table showing the number of offences for each offence subgroup (you can see a link to the original data source here, if you're interested):

Offences table

The first few roles of the table.


We want to be able to filter this to show only those offences for a particular group:

List of offence groups

The offence groups. It would be nice to be able to type one of these into a parameter box, and see the table change!


In Query Editor, create a new parameter called OffenceGroup, and set its default value to Robbery (if for no other reason than that it's the shortest to type in!):

Parameter created

Your parameter should look something like this.

Still in Query Editor, filter the table of offences to show only those ones for the offence group specified by your parameter:

The final table

After returning to your report, you should now see your table is much smaller!


We could do with a title for our report.  Go back to Query Editor, and tell Power BI Desktop that you want to load your parameter into your data model:

Enabling load

In Query Editor, choose to enable loading for your parameter.


Now add a measure to the main data table, with a formula looking something like this:

Title = "Showing offences for group - " &

Display this measure in a card to get a nice-looking report:

Parameter in title

You'll need to turn the card's Category Labels off to get this effect.


Go into Query Editor and change the offence group to Drug offences, and check that your table then updates:

Drug offences table

To avoid getting an error, you'll need to refresh your report to bring in the changed value of the parameter (the table will do this, but the card won't).


Save this as Was it worth it, then close down the Power BI instance you're using. 

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.
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