ECON20001 Lecture 1: Introduction
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Aggregate output: measures aggregate economic activity, generally measured in national income accounts. National income accounts: accounting system, records an economy"s production and income, used to measure aggregate economic activity. Aggregate output can be measured from either the production or income side: gross domestic product (gdp, gross domestic income (gdi, gdp = gdi, by construction. Gdp/gdi are flow variables (cid:373)easu(cid:396)e e(cid:272)o(cid:374)o(cid:373)i(cid:272) a(cid:272)ti(cid:448)it(cid:455) (cid:449)ithi(cid:374) a (cid:272)e(cid:396)tai(cid:374) pe(cid:396)iod (e. g. ) yearly, quarterly. Th(cid:396)ee (cid:449)a(cid:455)s to (cid:373)easu(cid:396)e agg(cid:396)egate output i(cid:374) the e(cid:272)o(cid:374)o(cid:373)(cid:455) du(cid:396)i(cid:374)g a gi(cid:448)e(cid:374) pe(cid:396)iod, gdp is the: Total value of the final goods and services produced. Total value-added the e(cid:454)t(cid:396)a (cid:448)alue (cid:271)(cid:396)ought du(cid:396)i(cid:374)g ea(cid:272)h stage of p(cid:396)odu(cid:272)tio(cid:374) Notes: all 3 methods will give the same value for aggregate output, valuation at market price, used to add different goods, (cid:1868)(cid:1867)(cid:1856)(cid:1873)(cid:1855)(cid:1872)(cid:1867)(cid:1866) (cid:1868)(cid:1855)(cid:1857) wellbeing, gdp only measures agg(cid:396)egate e(cid:272)o(cid:374)o(cid:373)i(cid:272) a(cid:272)ti(cid:448)it(cid:455) (cid:374)ot e(cid:395)ui(cid:448)ale(cid:374)t to sta(cid:374)da(cid:396)d of li(cid:448)i(cid:374)g o(cid:396) Sum of quantities times current prices: where prices denominated in dollars.