This is the 9964th most frequent Russian word.
аналогичных
Similar; analogous.
Here, "аналогичных" is used as an adjective in the genitive plural form, modifying "ситуациях" to indicate similarity or resemblance.
Люди в аналогичных ситуациях часто делают схожий выбор.
People in similar situations often make similar choices.
In this sentence, "аналогичных" is an adjective in the genitive plural form, describing "категорий" and showing that the products belong to similar types or groups.
Она приобрела продукты аналогичных категорий для сравнения.
She purchased products of similar categories for comparison.
The word "аналогичных" functions as an adjective, modifying "данных" to indicate data that share similarities.