As can be seen from the table, when x=-2 or x=0, y=-5,

It can be judged that (-2, -5) and (0, -5) are two symmetrical points on a parabola.

(-1, -6) is the vertex, and let the vertex of the parabola y=a(x+ 1)2-6.

Substitute (0, -5) into the analytical formula, -5=a-6, and get a= 1.

Therefore, the analytical formula of parabola is y=(x+ 1)2-6,

When x=-3, y=(-3+ 1)2-6=-2,

When x= 1, y=( 1+ 1)2-6=-2≠4,

So this miscalculated y value corresponds to X = 1.