Mich. Comp. Laws § 209.6

Sec. 6. It shall be the duty of the state tax commission to submit to the state board of equalization a statement showing the actual cash value of taxable real and personal property in each county in the state as ascertained and determined by its most recent examination of property values. The commission shall furnish such other information relative to property conditions and values as the state board of equalization may require, and shall assist in every possible way to bring about fair, equal and uniform valuations between the several counties in the state.