Using the Collected and Calculated Data in the table below and the stress$-$strain diagram obtained for a metal specimen in the lab as shown below, the stress at Peak Load approximately can be given as:

$\backslash$table$[[$Collected Data $($Measurement$),$Calculated Data$],[\backslash$table$[[$Original$],[$Diameter $($in$)]],\backslash$table$[[$Final$],[$Diameter $($in$)]],\backslash$table$[[$Original$],[$Gage$],[$Length $($in$)]],\backslash$table$[[$Final Gage$],[$Length $($in$)]],\backslash$table$[[$Peak Load$],[($Kips$)]],$Deformation $($in$)],[0\mathrm{.}50,0\mathrm{.}331,2\mathrm{.}00,2\mathrm{.}77,15\mathrm{.}117,0\mathrm{.}2686]]$

$65$ksi

$70$ksi

$77$ksi

$85$ksi