Section 1:
place an observation in the "supports the expanding universe" bin if it would provide evidence that the universe is expanding.
section 2:
place an observation in the "contradicts the expanding universe" bin if it would provide evidence that would force us to reconsider the idea of an expanding universe.
section 3:
place an observation in the "neither supports nor contradicts" bin if it does not allow us to distinguish between a universe that is expanding and a universe that is not expanding
a) irregular galaxies outside the local group are moving towards us.
b) all galaxies in the coma cluster of galaxies have redshifted spectra
c) galaxy speeds are faster in summer than in winter
d) the andromeda galaxy, a member of our local group, is moving towards us
e) the measured rate of expansion is the same in all directions
f) galaxies 200 million light-years away move away from us twice as fast as galaxies 100 million light-years away
g) spiral galaxies move away from us 10% faster than elliptical galaxies at the same distances