The phrase "are merely indicative" is correct and usable in written English.
It can be used to suggest that something serves as a sign or example but does not provide definitive proof or certainty.
Example: "The results of the survey are merely indicative of the general sentiment among the population, not a conclusive measure."
Alternatives: "are simply suggestive" or "are just representative".
But the biggest limit on Parliament's control is the fact that the votes are merely indicative.
The examples elaborated on below are merely indicative and are not intended to be exhaustive.
Note the indexes in the diagrams are merely indicative and should not be interpreted in a quantitative way.
Interruptions are merely indicative of the need for constant communication and coordination in the complex ecosystem that is healthcare [28].
Rather, my observations are merely indicative of the frequent conflicts in estate matters between stepmothers and stepchildren that I've come across.
These figures are merely indicative, and their use here is to fill a lamentable informational void due to the collective failure of the mainland government and its international collaborators, as a result of an appreciation deficit of the pastoral fauna as the foundational livelihood activity in Soqotra as well as a key enabler of the island's biodiversity preservation.
The 499-point one-day rise in the Dow Jones Industrial Average on March 16th was merely indicative of a volatility that has become increasingly familiar.
In addition, there is also an aura of criminality that cannot be denied, yet is merely indicative of our centuries-old collective anxiety over the morals of the poor.
However, the problems with iPlayer are far from unique - in fact, insiders say the turmoil surrounding it is merely indicative of a wider problem that is now engulfing the BBC.
Furthermore, it seems indispensable that the programming visions must not be merely indicative, i.e. too abstract or vague.
That's a huge shame, but it's merely indicative of the state the traditional media industry is in: falling revenues, eyeballs migrating online, digital revenues not kicking in etc.
