Question

What is the interquartile range of the data?

150, 165, 180, 198, 204, 216, 230, 255



A.
105


B.
51


C.
50.5


D.
28.5

Answer 1

IQR = Q3 - Q1

Answer 2

180, 198, 204, 216

Answer 3

150, 165, 180, 198, 204, 216, 230, 255

Cut the data in half

150, 165, 180, 198

and

204, 216, 230, 255

Find the middle terms.

150, 165, 180, 198

The two middle terms are 165 and 180, so find the mean.

165 + 180 = ?

Answer 4

is my answer but igreen might have a different answer

Answer 5

Can you add 165 + 180? @Jinx.exe

Answer 6

is the answer 105..? That's what I've got.

Answer 7

165+180=345

Answer 8

No, 105 is incorrect.

Now divide 345 / 2

Answer 9

172.5?

Answer 10

Yes, so that's Q1, now let's find Q3.

204, 216, 230, 255

The two numbers in the middle are 216 and 230.

Add 216 + 230 then divide 2.

Answer 11

223..?

Answer 12

Correct, so Q3 is 223.

Now subtract 223 - 172.5

Answer 13

50.5?

Answer 14

Correct, that's the Interquartile Range.

Answer 15

\(\bbox [10pt, lime, border:5pt solid black]{\huge\cal\color{red}\succ\color{blue}{Welcome\ to\ \color{#00A1FF}{Open}\color{#329932}{Study!\color{red}\prec}}}\)

You can give medals by clicking 'Best Response'. @Jinx.exe