判はん断だん材ざい料りょう

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Meanings

basis for a decision; material for judgment; evidence for judging

Refers to facts, data, or information used as a basis for making a decision or forming a judgment. Common in business, legal, and everyday contexts.

。

I can't decide yet because I don't have enough information to go on.

このデータは重じゅう要ような判はん断だん材ざい料りょうになる。

This data will serve as important material for our decision.

根こん拠きょ
根拠 is a more formal term for 'grounds' or 'basis', often used in logical or legal reasoning, while 判断材料 is a broader, everyday term for any information used to make a judgment.
証しょう拠こ
証拠 specifically means 'evidence' in a legal or proof-oriented sense, whereas 判断材料 is a neutral term for any material that aids decision-making, not necessarily proving something.

Compound of 判断 (judgment, decision) and 材料 (material, ingredient). The word transparently means 'material for judgment'.