What does «exactitud» mean in Spanish?

Accurate quality.

Examples of use in Spanish: "¿cuál es la exactitud de ese dato?".
Punctuality and fidelity in the execution of a thing.

Examples of use in Spanish: "debo saber con exactitud su funcionamiento".
Accuracy or fidelity of a data, calculation, measurement, expression, etc.

Examples of use in Spanish: "la figura no se aprecia con exactitud".

"debemos corroborar la exactitud de estos datos".
Truthfulness, rigor.

Examples of use in Spanish: "el noticiero debe informar con exactitud los hechos".