What is the interquartile range of this data set 2,5,9,11,18,30,42,48,71,73,81

First, find the median: 30

Then, find the median of the 2 sides from 30 (Q1 and Q3)

The middle value between 2 and 18 is 9. The middle value between 42 and 81 is 71. Now, just subtract 71-9.

The IQR is 62 :)

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b