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Mode vs Median vs Range vs Avg vs Deviation [#permalink]
10 Oct 2008, 20:29

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

Re: Mode vs Median vs Range vs Avg vs Deviation [#permalink]
11 Oct 2008, 05:06

1

This post received 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

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