ГлавнаяСборникиТурнирыРазделыФорумыУчастникиПечатьПомощьО системе

Разделы > Арифметика > задача:


50870 - ZScore normalization

Гость
• Вопросы к жюри (1)

Задачи раздела

• 50417 - Fun Fair
• 50433 - Sum of Cubes
• 50807 - Euro to Leke
• 50871 - Harmonic Mean
• 50521 - Pound to Grams
• 50292 - Average of 4 Marks
• 50432 - Numbers and Squares
• 50510 - What floor are they?
• 50870 - ZScore normalization
• 50797 - Nr of Missing Guests
• 50518 - Histogram Equalization
• 50522 - Multiplication Table - 2
• 50814 - Buying Books from Internet
• 50812 - Total Discount for the clients
• 51003 - Double Prime
• 50435 - City Electric Bills
• 50527 - Sum of LCMs

Обратная связь

Если у вас есть предложения или пожелания по работе Contester, посетите форум сайта www.contester.ru.

Лимит времени 2000/4000/4000/4000 мс. Лимит памяти 65000/65000/65000/65000 Кб.
Question by Ibrahim Mesecan.

ZScore normalization

There are several methods to put the items in the same scale. In Z-score normalization arithmetic mean is subtracted from each data item and the result is divided by the standard deviation.

where μ is the arithmetic mean and σ is the standard deviation of the sequence.

Question: Write a program that reads a sequence of numbers and then normalizes them using ZScore.

Input specification
You will be first given a number (n) the number of numbers, where 0 ≤ n ≤ 5000. Then in the following line, you will be given n integers which are between -50,000 and 50,000.

Output specification:
Show the normalized sequence with two digits precision.

Sample Input I
5
9 7 10 5 8
Sample Output I
0.62 -0.42 1.14 -1.46 0.10

Explanation: There are 5 numbers given. And, arithmetic mean μ = 7.8 and σ = 1.9235. If μ is subtracted from all the numbers and then divided by σ, we have the given sequence.



Для отправки решений необходимо выполнить вход.

www.contester.ru