Last visit was: 22 Dec 2024, 14:07 It is currently 22 Dec 2024, 14:07

Close

GRE Prep Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GRE score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Verbal Expert
Joined: 18 Apr 2015
Posts: 30472
Own Kudos [?]: 36818 [10]
Given Kudos: 26100
Send PM
Retired Moderator
Joined: 02 Dec 2020
Posts: 1831
Own Kudos [?]: 2149 [3]
Given Kudos: 140
GRE 1: Q168 V157

GRE 2: Q167 V161
Send PM
Senior Manager
Senior Manager
Joined: 03 Dec 2020
Posts: 440
Own Kudos [?]: 61 [1]
Given Kudos: 68
Send PM
Verbal Expert
Joined: 18 Apr 2015
Posts: 30472
Own Kudos [?]: 36818 [0]
Given Kudos: 26100
Send PM
Re: The preceding dot plot shows the number of minutes 16 customers waited [#permalink]
Expert Reply
void wrote:
Inter Quartile Range
how to calculate ?


see here sir https://gre.myprepclub.com/forum/gre-box-a ... tml#p82943
Intern
Intern
Joined: 13 Aug 2020
Posts: 2
Own Kudos [?]: 3 [2]
Given Kudos: 21
Send PM
Re: The preceding dot plot shows the number of minutes 16 customers waited [#permalink]
2
rx10 wrote:
No of minutes for 16 customers are:

\(5, 5, 5, 6, 6, 8, 10, 10, 10, 10, 13, 13, 15, 15, 15, 19\)

Qt A

The Inter Quartile Range is called the mid-spread, middle \(50\)% (between \(25 - 75\) %tile).

Here the middle \(50\)% will be \(6, 6, 8, 10, 10, 10, 10, 13, 13, 15\)

Inter quartile Range \(= 15 - 6 = 9\)

Qt B

\(\frac{Range}{2} = \frac{19 - 5}{2} = 7\)

Qt A > Qt B

Answer A



Position of Q3 = 12.75
Q3 = average of the 12th and 13th values in the ordered data:
Q3 = (13 + 15) / 2 = 14

Now, we have Q1 = 6 and Q3 = 14.

Step 4: Calculate the interquartile range (IQR):
IQR = Q3 - Q1
IQR = 14 - 6
IQR = 8

8>7
Prep Club for GRE Bot
Re: The preceding dot plot shows the number of minutes 16 customers waited [#permalink]
Moderators:
GRE Instructor
88 posts
GRE Forum Moderator
37 posts
Moderator
1115 posts
GRE Instructor
234 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne