用 R 评估人寿保险产品
Roel Verbelen, Ph.D.
Statistician, Finity Consulting



$\quad \,$ EPV为
$$ {}_{k|1}A_{x} = 1 \cdot \ v(k+1) \cdot \ {}_kp_x \cdot \ q_{x+k} = 1 \cdot \ v(k+1) \cdot \ {}_{k|}q_{x} \, . $$
计算常数利率$i = 3\%$下的${}_{5|1}A_{65} = 1 \cdot \ v(6) \cdot \ {}_{5|}q_{65} = 1 \cdot \ v(6) \cdot \ {}_5p_{65} \cdot \ q_{70}$。
# Mortality rates and one-year survival probabilities
qx <- life_table$qx
px <- 1 - qx
# 5-year deferred mortality probability of (65)
kpx <- prod(px[(65 + 1):(69 + 1)])
kqx <- kpx * qx[70 + 1]
kqx
0.02086664
# Discount factor
discount_factor <- (1 + 0.03) ^ - 6
discount_factor
0.8374843
# EPV of the simple life insurance
1 * discount_factor * kqx
0.01747548
用 R 评估人寿保险产品