Question

Which set of numbers has the mean with the least value? I{-9, - 7, 0, 4} II {-7, - 4, 6, 5} III {1, 0.1, 0.05, 0.05} IV {0, 5, 15, 2 }

Answer 1

mean for the given sets can be calculated as,

`\begin{gathered} setI=(-9-7+0+4)/(4) \\ =(-16+4)/(4) \\ =(-12)/(4) \\ =-3 \end{gathered}`
`\begin{gathered} \text{set ii =}(-7-4+6+5)/(4) \\ =(-11+11)/(4) \\ =0 \end{gathered}`
`\begin{gathered} \text{ set iii =}(1+0.1+0.05+0.05)/(4) \\ =(1.2)/(4) \\ =0.3 \end{gathered}`
`\begin{gathered} \text{ set iv = }(0+5+15+2)/(4) \\ =(22)/(4) \\ =5.5 \end{gathered}`