This is the 12566th most frequent Russian word.
комплексный
Comprehensive; integrated; complex.
The word "комплексный" is used here to mean "comprehensive" or "multifaceted," referring to an approach that considers multiple aspects.
Это комплексный подход к решению проблемы.
This is a comprehensive approach to problem solving.
In this sentence, "комплексный" implies a thorough and detailed analysis of data, encompassing various components or dimensions.
Комплексный анализ данных позволяет увидеть картину целиком.
Comprehensive data analysis allows you to see the whole picture.
Here, "комплексные" describes programs that are complete and include various modules or aspects of language learning.