Question

MEDAL AND FAN! I KNOW ITS NOT C OR D FOR THE LAST QUESTION SO PLEASE HELLLLLPPPPPPPPP!!!!!!!

Answer 1

The box plots below show attendance at a local movie theater and high school basketball games:

Which of the following best describes how to measure the spread of the data?

A. The IQR is a better measure of spread for movies than it is for basketball games.
B. The standard deviation is a better measure of spread for movies than it is for basketball games.
C. The IQR is the best measurement of spread for games and movies.
D. The standard deviation is the best measurement of spread for games and movies

Answer 2

Someone please help

Answer 3

how do you know its not c or d?

Answer 4

@amistre64 are you able to help me?

Answer 5

Cuz i got them both wrong

Answer 6

so trial and error eh

Answer 7

what do you know about standard deviation and IQR?

Answer 8

wait one second i just notice the choices are all mixed up

Answer 9

Oh i just notice i posted the wrong question..i still need help with this one but theres a another question that i know for sure is not C or D

Answer 10

The table below shows data from a survey about the amount of time students spend doing homework each week. The students were either in college or in high school:

High Low Q1 Q3 IQR Median Mean σ
College stu 50 5 7.5 15 7.5 11 13.8 6.4
High School 16 0 9.5 14.5 5 13 10.7 5.3

Which of the choices below best describes how to measure the spread of this data?
(Hint: Use the minimum and maximum values to check for outliers.)
A. Both spreads are best described with the IQR.
B. Both spreads are best described with the standard deviation.
C. The college spread is best described by the IQR. The high school spread is best described by the standard deviation.
D. The college spread is best described by the standard deviation. The high school spread is best described by the IQR.

Answer 11

Ok so this is the question that the answer is not C or D

Answer 12

Sorry for all the confusion lol

Answer 13

"The standard deviation is used in conjunction with the mean to summarise continuous data, not categorical data. In addition, the standard deviation, like the mean, is normally only appropriate when the continuous data is not significantly skewed or has outliers."

https://statistics.laerd.com/statistical-guides/measures-of-spread-standard-deviation.php

Answer 14

So maybe A

Answer 15

it appears that if the data is pretty consistent (the box plot is symmetric) then the deviation is suitable, otherwise use the IQR.

this is just a cursory reading of the information from the google and i claim no expertise in the matter.

Answer 16

Cuz they both do have outliers.. wait are we doing the first or second question

Answer 17

thats just information, its relevant to the first, might be to the second ... havent read it yet

Answer 18

oh ok well i think it might be A for the first

Answer 19

which one do you say is NOT c or d?

Answer 20

the second question

Answer 21

yeah, movies seems out of whack, so IQR might be better for it, and games is pretty even thruout so deviation for it. as an educated guess.

Answer 22

So A?

Answer 23

organize the table better on 2

sort it so that we can better see the data

Answer 24

A on question 1 seems fair. and like i said, i dont have the expertise to verify its accuracy tho. just information from the google

Answer 25

ok one sec..

Answer 26

High Low Q1 Q3 IQR Median Mean σ
College 50 5 7.5 15 7.5 11 13.8 6.4
High School 16 0 9.5 14.5 5 13 10.7 5.3

Answer 27

Ok should be a lot better

Answer 28

Q0 Q1 Q2(Mean) Q3 Q4 IQR σ
College stu 5 7.5 11(13.8) 15 50 7.5 6.4
High School 0 9.5 13(10.7) 14.5 16 5 5.3

Answer 29

both seem a bit off

Answer 30

You forgot to add high and low thats why

Answer 31

Q0 and Q4 are high and low, Q2 is median

Answer 32

i have an idea wait one second

Answer 33

i just put B for now btw

Answer 34

@amistre64 please dont leave i really need help

Answer 35

Can someone please help me?

Answer 36

im not gone ...

Answer 37

oh ok you werent viewing it tho

Answer 38

Did you see the file i attached?

Answer 39

the little notifs work so when you post i see it and come back. instead of waiting around for who knows how long.

you choose B, why?

Answer 40

assuming B means second that is, none of them are labeled

Answer 41

yea idk why i put it... A dosent seem right

Answer 42

when does IQR work best?

when does deviation work best?

Answer 43

well according to what you told me.. deviation is best when there are outliers

Answer 44

deviation when there are NO outliers .. or rather a nice symmetric plot
^^^