Two questions : creating a matrix and not counting null values

Hi All,

I recently started using Powerbi for visualizations, and I am stuck on two questions and need help.

Question 1:

How can I create a visualization like this? Say, for example, I a similar data and want the final output to be arranged like this; how can I achieve this in PowerBi?

Question 2:

I have a list of data that I want the show the total number, and I can use the card visualization and count distinct; the issue is that blank rows get counted too. Here is an example:

Street    Cars

Li          White

Jane

Vic       Blue

Tar       Red

Mark   Green

In this case, the issue is that I count cars as distinct though Jane is blank, it gets counted. Visualizations on the dashboard are linked so I want it to be blank and not show a number when filtered for jane.

Thanks for the help