What is the level of measurement of the following variables? 

The number of downloads of different bands’ songs on iTunes
The names of the bands that were downloaded
Their positions in the download chart
The money earned by the bands from the downloads
The weight of drugs bought by the bands with their royalties
The type of drugs bought by the bands with their royalties
The phone numbers that the bands obtained because of their fame
The gender of the people giving the bands their phone numbers
The instruments played by the band members
The time they had spent learning to play their instruments