▁showed ▁a ▁decrease ▁in ▁articles ▁that ▁use ▁neither ▁geometric ▁representations ▁nor ▁mathematical ▁notation ▁from ▁ 9 5 % ▁in ▁ 1 8 9 2 ▁to ▁ 5 . 3 % ▁in ▁ 1 9 9 0 . ▁ ▁A ▁ 2 0 0 7 ▁survey ▁of ▁ten ▁of ▁the ▁top ▁economic ▁journ als ▁finds ▁that ▁only   5 . 8 % ▁of ▁the ▁articles ▁published ▁in ▁ 2 0 0 3 ▁and ▁ 2 0 0 4 ▁both ▁lack ed ▁statistical ▁analysis ▁of ▁data ▁and ▁ ▁lack ed ▁displayed ▁mathematical ▁expressions ▁that ▁were ▁indexed ▁with ▁numbers ▁at ▁the ▁margin ▁of ▁the ▁page . ▁ ▁E con omet rics ▁ ▁Between ▁the ▁world ▁wars , ▁adv ances ▁in ▁mathematical ▁statistics ▁and ▁a ▁cadre ▁of ▁mathemat ically ▁trained ▁econom ists ▁ ▁led ▁to ▁econ omet rics , ▁which ▁was ▁the ▁name ▁proposed ▁for ▁the ▁discipline ▁of ▁adv ancing ▁econom ics ▁by ▁using ▁mathematics ▁and ▁statistics . ▁Within ▁econom ics , ▁" e con omet rics " ▁has ▁often ▁been ▁used ▁for ▁statistical ▁methods ▁in ▁econom ics , ▁rather ▁than ▁mathematical ▁econom ics . ▁Statist ical ▁econ omet rics ▁features ▁the ▁application ▁of ▁linear ▁regression ▁and ▁time ▁series ▁analysis ▁to ▁economic ▁data . ▁ ▁R agn ar ▁Fr isch ▁co ined ▁the ▁word ▁" e con omet rics " ▁and ▁helped ▁to ▁found ▁both ▁the ▁E con ometric ▁Society ▁in ▁ 1 9 3 0 ▁and ▁the ▁journal ▁E con omet rica ▁in ▁ 1 9 3 3 . ▁ ▁A ▁student ▁of ▁Fr isch '