We, analysts take pride in the fact that we tell stories. But what if you have a boss, client or colleague who wouldn’t buy the story?
This is a problem we face often. Let’s say your boss has stubborn opinion about something, like more advertising leads to more sales. You know the data doesn’t support this theory. But how do you change your boss’ mind?
Here is an interesting way, showcased in NY Times recently.
Changing stubborn opinions with visualizations – 3 step process:
Assuming we are talking about ad spend vs. sales example:
- Ask your boss to draw a line that (s)he thinks to be true.
- Then show the line from original data (or observations).
- Tell your boss how accurate / wrong his(her) line is.
This technic can be very persuasive if you make it interactive.
For more on how NY Times implemented it, check out this page:
How family income affects children’s college chances
Your thoughts please:
Here are 2 questions for you:
- How do you change someone’s mind using data?
- How would you implement these concepts in Excel?
Go ahead and share your thoughts in the comments section.
I have a stubborn opinion that only 1% people who read articles on Chandoo.org leave comments. Change my mind. 🙂
2 Responses to “Top 10 Power BI Interview Questions & Answers”
Hello...
In Power BI I have data that includes months by name only (e.g. May, April, December...)
I need to build charts etc. but i need the months to go chronologically... not alphabetically... I cannot seem to find the fix to this.... once again, my data does NOT have an actual date attached to it (like 02/01/2023)....only month names... can i use a helper table wher i id the month names as numbers 1 thru 12? and if so, how do i manage this to work for me ?
Thank you.
~Keith
You need to setup an extra table to map each month name to a running number. A simple 12 row table like
Jan 1
Feb 2
Mar 3
..
Dec 12
Then create a relationship between this month table and your month column
Now, go to "table view" in Power BI and set the sort by column to month number for the month name column on this new table.
Finally, use the new table's month name whenever you need to refer to the month name in the visuals.
They will be chronologically arranged.