How to change the last row of a vector to a sum of the vector?

So I have this vector TB12_stats=200+rand(17,1)*200 and I want to change row 17 to the sum of rows 1 through 16 and I have no clue how to do this??

[Star Strider]

Is this homework?

[Nicholas Costa]

Yes

[Star Strider]

Thank you for that clarification.

[Jos (10584)]

I appreciate your honesty :) Here are some hints

M = magic(5)
T = M(1:4,:)
S = sum(T,1)

[Rik]

Do you know how to assign a value to one position in a vector? Do you know how to get several consecutive elements from a vector? Do you know the method in Matlab to calculate a sum?

If you don't know the solution to a problem, try to break it down to parts you do know the solution for.

Answer 1

[Star Strider]

See the documentation on Matrix Indexing (link). That should help you assign ‘TB12_stat(17)’.