I remember dividing whole numbers being HARD, and I mean HARD HARD HARD. but I got over it.
It really depends on HOW you're dividing the whole numbers. Into thirds, fourths, halves, and WHAT the number itself is. Remember to specify your question!
Data collection is what the name implies the process of getting and collecting the data. Data analysis is tracking the trends within pre-existing data sets or using certain data to support a cause.