Given a sentence in Tagalog language, translate the sentence to English language keeping the meaning of the original sentence intact.

Tagalog sentence: Siya napagmasdan buhay-asa sa isang pagtaas ng populasyon at ipinakita sa 1893, laban sa ano nagkaroon ay sumampalataya, na ang buhay-asa sa tulad ng isang populasyon ay lamang computed mula sa tiyak na pagkamatay at mga talahanayan ay hindi isang function ng napagmasdan na rate ng kapanganakan at kamatayan rate.
He examined life expectancy in an increasing population and showed in 1893, contrary to what had previously been believed, that life expectancy in such a population could only be computed from mortality tables and was not a function of the observed birth rate and death rate.

Tagalog sentence: Kung mayroon ka pa ring problema sa salpok pagbili, umorder iyong groceries sa Internet.
If you still have a problem with impulse buying, order your groceries over the Internet.

Tagalog sentence: Kapag nakabaling pa-left ang pagkakasulat, iyon ay introvert (highlight &amp; click the word for definition) at kapag pa-right ‘yon ay extrovert.

In psychographology, those writing (slanting) toward left are introverts, while those inclined to write going to right direction are extroverts.