Need help understading prime notation for vector/time series

Question

I have vector/time series with ' symbol at the end:

X=(x₁,x₂,...,x_n)'

What does it mean? It is derivative of vector/time series?

Answer 1

It likely means transpose.

That is $X$ is a column vector. A clearer notation would be $x=(x_1, x_2 , \ldots, x_n)^T$