Translation of "Inaccurate" in Japanese

The data is often inaccurate.

データはしばしば不正確だ。

The budget appears to be inaccurate and unrealistic.

予算は不正確で、しかも非現実的に思える。

Our experiment has revealed that his report was inaccurate.

我々の実験の結果、彼の報告は不正確なことがわかった。