dogruya-yaklastirma-2.py

xi = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
yi = [211, 276, 258, 253, 248, 237, 243, 273, 279, 297]
n = len(xi)

xiyi, xi2, standartsapma, ortalamahata = 0, 0, 0, 0

for i in range(n):
    xiyi += xi[i] * yi[i]
    xi2 += xi[i]**2
    standartsapma += (yi[i] - sum(yi) / n)**2

a1 = (n * xiyi - sum(xi) * sum(yi)) / (n * xi2 - sum(xi)**2)
a0 = sum(yi) / n - a1 * sum(xi) / n

standartsapma = (standartsapma / (n - 1))**(1/2)

for i in range(n):
    y = a0 + a1 * xi[i]
    ortalamahata += yi[i] - y
    
ortalamahata = abs((ortalamahata / (n - 2))**(1/2))

print(a0 + a1 * 11)