The range of number of songs - [ 7 , 16 ] or 9
To find the range you subtract the highest number with lowest one. In this case 16 is the highest and 7 the lowest. 16 - 7 = 9.
Total number of albums in Sals collection - 17
To find the total add up all the dots. 1+2+2+4+1+2+2+1+2
= 17