False
A vector of size (n,1) is called a column vector. A vector is a 1-dimensional array of numbers, and in linear algebra, it is often represented as a column vector, which is a matrix with a single column and n rows.
A row vector, on the other hand, is a matrix with a single row and n columns. It can be represented as a (1,n) shape array.
So the statement that a vector of size (n,1) is called a row vector is false, it's actually a column vector.