Statisitics Question: Hey guys its been a long time since I got stats, but for t

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Statisitics Question: Hey guys its been a long time since I got stats, but for the data mining class we have this take homework assignment to prepare us for the quiz. I keep getting this problem wrong, I double checked and everything. Can anyone help me? I want to know what is the right way of doing it, with full explanantion. Give good ratings with complete explanantion.

Incorrect Question5 0/ 2 pts Use the following methods to normalize the group of data, 10,15,20,30,50,65>. Enter your answer as comma separated list of values with exactly 2 decimals and only one space after each comma, e.g., "0.00, 0.26, 0.89, 1.23,-0.20, 0.12" (without the quotes) (a) Min-max normalization, given min-0 and max=1: 10.00, 15.00, 20.00 (b) Z-score normalization:1.00,-0.77,-0.53 (c) Euclidean length (L-2 norm) normalization: 81.37, 76.37, 71.37 Answer 1: 10.00, 15.00, 20.00, 30.00, 50.00, 65.00 Answer 2: -1.00,-0.77,-0.53, -0.07, 0.84, 1.54 Answer 3: 81.37, 76.37, 71.37, 61.37, 41.37, 24.37

Explanation / Answer

a)Min-Max normalization

y= (x-min)/(max-min)

b) z-score

z = (X -mean)/sd

mean = 31.66666

sd =sqrt(variance)= 21.6024689

c)

I have some doubt in part c) too ,can you post again

10 0 15 0.090909091 20 0.181818182 30 0.363636364 50 0.727272727 65 1

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