Lesson: Mean, Median and Mode

Comment on Mean, Median and Mode

I'm at cloud nine now! I'm a potential GRE aspirant. I find this video very useful for dummies like me to learn Maths. In a funny note, I'm also finding all GRE vocabs words to praise the tutorial. It is so useful that I was able to crack many questions easily.
greenlight-admin's picture

Thanks! Glad you like the videos,

Hi, I just want to make sure about one information about the mode, I know that if all numbers in 1 set are different from each others there will be no mode, but you have said in the e.g at 2:20 mins all of the four numbesr we will consider them as mode so we have 4 modes.
greenlight-admin's picture

In the case that all of the values are different, then we can say that there is a multi-way tie for the most common value.

So, for example, the set {2, 3, 6, 9} has four modes: 2, 3, 6 and 9

http://greprepclub.com/forum/course-of-an-experiment-95-measurements-were-recorded-1723.html

plz explain this sum
greenlight-admin's picture

You bet.
I've posted my solution here: http://greprepclub.com/forum/course-of-an-experiment-95-measurements-wer...

Cheers,
Brent

Thankyou.

http://greprepclub.com/forum/frequency-distribution-of-the-values-of-a-variable-y-1757.html

Sometimes i get confused to put answers in 0.1, 0.01 similar like accuracies. Can you please help me in understanding those concepts well.

Hi
Can you pl provide the soln to this - A set of 7 integers has a range of 2, an average of 3, and a mode of 3.
greenlight-admin's picture

Set A can be EITHER {2, 2, 3, 3, 3, 4, 4} OR {2, 3, 3, 3, 3, 3, 4}
Both of these sets meet the given conditions.
Can you tell me how the question is worded?

This is the link to the exact question: http://greprepclub.com/forum/a-set-of-7-integers-has-a-range-of-2-an-average-of-3-and-a-mode-of-2675.html

I was able to come to the answer. But I wasn't sure till the end. Would be nice if you could help me think through.
greenlight-admin's picture

You bet.
Here's my step-by-step solution: http://greprepclub.com/forum/a-set-of-7-integers-has-a-range-of-2-an-ave...

Cheers,
Brent

2 3 3 3 3 3 4 is one possible set.

Since they told mode 3 expect 1st and 7th, all member can be 3, we met mode restriction. Range has to be 2 so let 1st member be 2 and certainly 7th member will be 4.

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