New to this and QGIS, and I am very lost. I need to create a choropleth crime map of number of crimes committed in the area (each borough) I have the data https://data.police.uk/data/ but when I try to join the data with the map, It just isn't working and i don't know where I'm going wrong. This photo is a example of what I intend to create:
Here I have added the boundaries.
Then i have mapped the dots of Crime data in the Uk, It is a month of crimes committed in each police force.
This is just showing you what the crime data looks like.
So I'm trying to make a choropleth map with this data, but when I add it to symbology it just comes up with 000000 and when I try join the crime data to the map I don't think I'm putting the correct join field to target field.