Mode vs Median vs Range vs Avg vs Deviation : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 24 Jan 2017, 02:02

### GMAT 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

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

Practice
Pays

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Mode vs Median vs Range vs Avg vs Deviation

Author Message
Manager
Joined: 09 Oct 2008
Posts: 93
Followers: 1

Kudos [?]: 20 [0], given: 0

Mode vs Median vs Range vs Avg vs Deviation [#permalink]

### Show Tags

10 Oct 2008, 20:29
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Hello Friends

Can some one shed some light on this 5 things..?

I am 80% clear but facing some problem when encounter related example in test.

It is taking much time then anticipated.

Please provide me some info. regd same.

I am okay if someone paste 4 example (2 for odd numbers( positive +negative) and 2 for ( positive +negative)). or some nice tutorial link and 2-3 live example

Thanks
Manager
Joined: 07 Jan 2008
Posts: 86
Followers: 2

Kudos [?]: 174 [1] , given: 1

Re: Mode vs Median vs Range vs Avg vs Deviation [#permalink]

### Show Tags

11 Oct 2008, 05:06
1
KUDOS
Mode is the frequency of a number in a series of numbers:
For eg: 2 4 2 5 2 6 2 7 2 8 ===> mode is 2 as it is occurring the most times

Median is the middle number:
For eg: 1 2 3 4 5 ==> In this case the median is 3. If there are even number of numbers, the median is the average of the middle two numbers.

Range is the distribution of the numbers:
For eg: 1 2 3 4 5 ==> the range is 5 - 1 = 4

Average is average!
For eg: 1 2 3 ==> (1+2+3)/3

Deviation is the distance of a number from the average:
For eg: 1 2 3 4 5
Step 1: Find mean (average) of 1 2 3 4 5
Step 2: Find diff between mean and each number
Step 3: Square each difference
Step 4: Find square root of "the average of the squared numbers" ==> this is SD

Some rules:
SD is never larger than range
If a set has a low SD, the terms are relatively close to the mean

I hope this helps.
Manager
Joined: 09 Oct 2008
Posts: 93
Followers: 1

Kudos [?]: 20 [0], given: 0

Re: Mode vs Median vs Range vs Avg vs Deviation [#permalink]

### Show Tags

11 Oct 2008, 07:31
Thanks man... it will really help evey one.
Senior Manager
Joined: 21 Apr 2008
Posts: 269
Location: Motortown
Followers: 2

Kudos [?]: 143 [0], given: 0

Re: Mode vs Median vs Range vs Avg vs Deviation [#permalink]

### Show Tags

12 Oct 2008, 17:34
Out of curiosity, what is the mode for 2,3,4,5,6,7,8 ?

Is it all or none ?
VP
Joined: 30 Jun 2008
Posts: 1043
Followers: 14

Kudos [?]: 570 [0], given: 1

Re: Mode vs Median vs Range vs Avg vs Deviation [#permalink]

### Show Tags

12 Oct 2008, 19:21
LiveStronger wrote:
Out of curiosity, what is the mode for 2,3,4,5,6,7,8 ?

Is it all or none ?

I guess it would be none. No element is occurring "most" number of times.
_________________

"You have to find it. No one else can find it for you." - Bjorn Borg

Manager
Joined: 09 Oct 2008
Posts: 93
Followers: 1

Kudos [?]: 20 [0], given: 0

Re: Mode vs Median vs Range vs Avg vs Deviation [#permalink]

### Show Tags

16 Oct 2008, 18:17
what is SD of following series?

SR: 1,2,3,4,5

Mean= average:3

Diff: 2,1,0,1,2

Sqr of diff:4 ,1,0,1,4

Avg: 10/5 =2

now do we need to find root of 2 to get SD?

and one more question.

what is mode of following series?

sr1:1,1,2,2,3,3

sr2: 4,4,5,5

Thanks
Intern
Joined: 23 Sep 2008
Posts: 15
Followers: 0

Kudos [?]: 0 [0], given: 0

Re: Mode vs Median vs Range vs Avg vs Deviation [#permalink]

### Show Tags

16 Oct 2008, 22:29
amitdgr wrote:
LiveStronger wrote:
Out of curiosity, what is the mode for 2,3,4,5,6,7,8 ?

Is it all or none ?

I guess it would be none. No element is occurring "most" number of times.

The mode for this is all as each element is occuring 1 time.
Intern
Joined: 23 Sep 2008
Posts: 15
Followers: 0

Kudos [?]: 0 [0], given: 0

Re: Mode vs Median vs Range vs Avg vs Deviation [#permalink]

### Show Tags

16 Oct 2008, 22:31
vishalgc wrote:
what is SD of following series?

SR: 1,2,3,4,5

Mean= average:3

Diff: 2,1,0,1,2

Sqr of diff:4 ,1,0,1,4

Avg: 10/5 =2

now do we need to find root of 2 to get SD?

and one more question.

what is mode of following series?

sr1:1,1,2,2,3,3

sr2: 4,4,5,5

Thanks

The SD is 1.414 which is the square root of 2 and the mode in both cases are the elements ie;

sr 1 mode = 1, 2 and 3
sr 2 mode = 4 and 5
Re: Mode vs Median vs Range vs Avg vs Deviation   [#permalink] 16 Oct 2008, 22:31
Display posts from previous: Sort by