Tolong jawab dong kakak2 penting nih​

rata rata = (3+4+4+5+6+8) : 6

= 30 : 6

= 5

simpangan baku = ([3-5]+[4-5]+[4-5]+[5-5]+[6-5]+[8-5]) : 6

= (2+1+1+0+1+3) : 6

= 8 : 6

= 1,3