$\backslash$table$[[,$A$,$B$,$C$,$D$],[1,$Firm,Return,PE$,$PS$],[2,1,4\mathrm{.}7,14\mathrm{.}36,2\mathrm{.}44],[3,2,-4\mathrm{.}2,11\mathrm{.}02,0\mathrm{.}79],[4,3,5\mathrm{.}8,11\mathrm{.}96,2\mathrm{.}25],[5,4,4\mathrm{.}8,11\mathrm{.}3,1\mathrm{.}34],[6,5,-11\mathrm{.}6,9\mathrm{.}81,1\mathrm{.}86],[7,6,20\mathrm{.}9,15\mathrm{.}67,0\mathrm{.}8],[8,7,64\mathrm{.}1,16\mathrm{.}07,1\mathrm{.}63],[9,8,18\mathrm{.}8,9\mathrm{.}02,1\mathrm{.}02],[10,9,-15\mathrm{.}4,11\mathrm{.}39,2\mathrm{.}8],[11,10,48\mathrm{.}3,13\mathrm{.}73,1\mathrm{.}41],[12,11,7,11\mathrm{.}5,1\mathrm{.}24],[13,12,21\mathrm{.}2,14\mathrm{.}31,1\mathrm{.}27],[14,13,-18\mathrm{.}5,8\mathrm{.}21,0\mathrm{.}83],[15,14,2\mathrm{.}9,9\mathrm{.}49,2\mathrm{.}65],[16,15,12\mathrm{.}3,11\mathrm{.}21,2],[17,16,-3\mathrm{.}6,12\mathrm{.}62,2\mathrm{.}74],[18,17,2\mathrm{.}1,9\mathrm{.}66,1\mathrm{.}97],[19,18,16\mathrm{.}2,13\mathrm{.}44,1\mathrm{.}15],[20,19,23\mathrm{.}1,14\mathrm{.}95,3\mathrm{.}34],[21,20,-1\mathrm{.}3,8\mathrm{.}93,2\mathrm{.}39],[22,21,-8\mathrm{.}3,10\mathrm{.}55,3\mathrm{.}68],[23,22,-3\mathrm{.}6,7\mathrm{.}94,2\mathrm{.}22],[24,23,15\mathrm{.}5,16\mathrm{.}38,4\mathrm{.}59],[25,24,21\mathrm{.}2,16\mathrm{.}31,0\mathrm{.}88],[26,25,6,15\mathrm{.}07,2\mathrm{.}3],[27,26,11\mathrm{.}6,9\mathrm{.}15,0\mathrm{.}98],[28,27,13\mathrm{.}6,14\mathrm{.}96,1\mathrm{.}36],[29,28,15\mathrm{.}6,15\mathrm{.}62,0\mathrm{.}95],[30,29,0\mathrm{.}9,12\mathrm{.}62,0\mathrm{.}51],[31,30,16\mathrm{.}6,13\mathrm{.}98,1\mathrm{.}96],[\{$

$\backslash$table$[[32],[22]]\}],[]]$

A research analyst is trying to determine whether a firm's price$-$earnings $($PE$)$ and price$-$sales $($PS$)$ ratios can explain the firm's stock performance over the past year. A PE ratio is calculated as a firm's share price compared to the income or profit earned by the firm per share. Generally, a high PE ratio suggests that investors are expecting higher earnings growth in the future compared to companies with a lower PE ratio. The PS ratio is calculated by dividing a firm's share price by the firm's revenue per share for the trailing $12$ months. In short, investors can use the PS ratio to determine how much they are paying for a dollar of the firm's sales rather than a dollar of its earnings $($PE ratio$).$ In general, the lower the PS ratio, the more attractive the investment. The accompanying table shows a portion of the year$-$to$-$date returns $($Return in $\%)$ and the PE and PS ratios for $30$ firms.

$\backslash$table$[[$Firm$,$Return,PE$,$PS$],[1,4\mathrm{.}7,14\mathrm{.}36,2\mathrm{.}44],[2,-4\mathrm{.}2,11\mathrm{.}02,0\mathrm{.}79],[vdots,$vdots,vdots,vdots