To provide a waveform display and a numerically determined result display method, capable of displaying a numerically determined result regarding the propriety in relation to the upper and lower limit values as allowance range values, to a computed value provided by computation-processing a measured data, while imparting an identification mark freely discriminating the propriety, with respect to each of the upper limit value and the lower limit value.

A partial area of a display screen 21 serves as a determined result display section 22 in the display screen 21 of a display part 15 in this waveform display, a partial area in a residual part thereof or the whole area thereof serves as a waveform display area 30; and not only is the propriety in the relation displayed in each in a numerical determination result display section 33 prepared separately displayed, but also the identification marks 27, 28, capable of discriminating the determination that a cause exists in both/either of the upper limit value and/or the lower limit value in the predetermined allowance range values, are imparted, so as to be displayed together with the upper limit value and the lower limit value, in the determined result display section 22.