Mean = [tex] \frac{300+785+670+187+760+724}{6} = \frac{3426}{6}=571 [/tex]
STEP 2
Subtract the mean from each data value then square the answer [tex]300-571=-271[/tex] ⇒ [tex] (-271)^{2} =73441[/tex] [tex]785-571=214[/tex] ⇒ [tex] (214)^{2}=45796 [/tex] [tex]670-571=99[/tex] ⇒ [tex] (99)^{2}=9801 [/tex] [tex]187-571=-384[/tex] ⇒ [tex] (-384)^{2} =147456[/tex] [tex]760-571=189[/tex] ⇒ [tex]189^{2}=35721 [/tex] [tex]724-571=153[/tex] ⇒ [tex]153^{2} =23409[/tex]
STEP 3
Add the squared answers in STEP 2 then find the mean
