<h2><em><u>Answer:</u></em></h2><h2><em><u>6</u></em></h2><h2><em><u>Step-by-step explanation:</u></em></h2><h2><em><u></u></em></h2><h2><em><u> 4+ 2 = 6 </u></em></h2><h2><em><u>the standard deviation is around 0.6.</u></em></h2><h2><em><u>easy </u></em></h2><h2><em><u>Have a blessed day </u></em></h2>