Bubble Chart - 5 variables including 2 "combined"

[shooterznednol]

Hi,

Having some trouble and would like help: I have a set of data that I want to present in Bubble chart format. Data would be as follows:

1. F2 vowel space average point (X) – Range from 700 to 1700
2. F1 vowel space average point (Y) – Range from 500 to 900
3. Individual speakers differentiated (colour)
4. F1 variation of speaker (size/shape)
5. F2 variation speaker (size/shape)

Therefore, I am showing different speakers’ (3) variability (4, 5) in terms of both F1 and F2 (1, 2) – ideally the latter two can be combined into one bubble, if possible.