This is the 8852nd most frequent Russian word.
предварительная
"Preliminary."
Here, 'предварительная' modifies 'информация' (information) to indicate that the information is prior or preparatory.
Мы получили предварительную информацию о встрече.
We received preliminary information about the meeting.
In this example, 'предварительная' is used with 'оценка' (assessment) to denote that this evaluation is initial or preliminary.
Перед началом проекта была создана предварительная оценка рисков.
Before the project started, a preliminary risk assessment was created.
In this context, 'предварительным' (a form of 'предварительная' in plural dative case) describes 'данным' (data), suggesting that the data is early or provisional.