тервер 3.1

import math

p = [
    [0.15, 0.25, 0.25],
    [0.15, 0.1, 0.1]
     ]

x = [2, 3, 4]
px = [0.3, 0.35, 0.35]

y = [1, 2]
py = [0.65, 0.35]

MX = 0
MY = 0
for i in range(len(x)):
    for j in range(len(y)):
        MX += x[i]*px[i]*py[j]
        MY += y[j]*px[i]*py[j]

DX = 0
DY = 0
for i in range(len(x)):
    for j in range(len(y)):
        DX += (x[i] - MX)**2 * px[i]*py[j]
        DY += (y[j] - MY)**2 * px[i]*py[j]

print("MX = {}".format(MX))
print("MY = {}".format(MY))
print("DX = {}".format(DX))
print("DY = {}".format(DY))

MXY = 0
for i in range(len(x)):
    for j in range(len(y)):
        MXY += x[i] * y[j] * p[j][i]

print("M(XY) = {}".format(MXY))

kxy = (MXY - MX*MY) / math.sqrt(DX * DY)
print("kxy = {}".format(kxy))

print(0.65/0.35 + 2*1)

print(0.3 * 4.5 + 0.35 * 3.857 + 0.35*3.857)