1. Analyse
examine (something) methodically and in detail, typically in order to explain and interpret it.
"we need to analyse our results more clearly"
synonyms: examine, inspect, survey, scan, study, scrutinize, look over, peruse;

2. Evaluate form an idea of the amount, number, or value of; assess.
"the study will assist in evaluating the impact of recent changes"
Synonyms: assess, assess the worth of, put a value/price on

3. Reflect think deeply or carefully about.
"he reflected with sadness on the unhappiness of his marriage
Synonyms: think about, give thought to, consider, give consideration to, review, mull over, contemplate, study, cogitate about/on, meditate on, muse on, deliberate about/on, ruminate about/on/over, dwell on, brood on/over, agonize over, worry about, chew over, puzzle over, speculate about, weigh up, revolve, turn over in one's mind, be in a brown study