Generate a 15-by-2 matrix q with random numbers

What is the solution for these questions

a)Generate a 15-by-2 matrix q with random numbers b) create a 15-by-1 vector of sequential natural numbers from 1to 15 and name it X c)Plot using X and the first column of the matrix q(as Y): d)on the same chat plot using X and the second column of matrix q (as y)

2. Calculate the mean fo reach row of q b) calculate the standard deviation for each column of q

[Aquatris]

This looks more like a 'do my homework' type of question, which is not appropriate for this forum.

[Steven Lord]

If you show us the code you've written to try to solve these problems and explain where you're having difficulty we may be able to offer some suggestions for how to proceed.

[Joe anson]

help

Answer 1

[Joe anson]

>> q=int8(100*rand(15,2))

q =

15×2 int8 matrix

   16   76
   97   74
   96   39
   49   66
   80   17
   14   71
   42    3
   92   28
   79    5
   96   10
   66   82
    4   69
   85   32
   93   95
   68    3

>> x=int8(15*rand(1,15))

x =

1×15 int8 row vector

    7    6   11   12    3    7    7   10   11   11    4   10   10    2    2

how do i calculate std for column of q?????