설비 투자와 자본재가격한편, 설비 투자 증가율과 설비 투자 디플레이터 상승률 간에는 빈도영역에서도 음의 상관계수가 추정되었다.
A negative correlation coefficient was also estimated in the frequency domain between facility investment and capital goods prices, and between facility investment growth rate and facility investment deflator increase rate.