Question

Please help :) I don’t understand this

Answer 1

Explanation:

Part A

Neighborhood A :

2, 2, 2, 4, 4, 5, 5, 5, 5

mean =
`(2+2+2+4+4+5+5+5+5)/(9)` =
`(34)/(9)` ≈ 3.8

median = 4

mode = 5

range = 3

`Q_(3)` -
`Q_(1)` = 5 - 2 = 3

===================

Part B.

Neighborhood B :

1, 1, 2, 2, 3, 4, 5, 5, 12

mean = ( 1 + 1 + 2 + 2 + 3 + 4 + 5 + 5 + 12 ) ÷ 9 =
`(35)/(9)` ≈ 3.9

median = 3

mode = 1, 2, 5

range = 11

`Q_(3)` -
`Q_(1)` = 5 - 1.5 = 3.5

Outlier = 12