Question

Please create a matrix A by extract the first 9 entries(first 9 rows) from Ownership(income&lot size) and first 9 entries(first 9 rows) from Non ownership(income& lotsize) by using matlab from the table below:

Income	Lot_Size	Ownership
60	18.4	owner
85.5	16.8	owner
64.8	21.6	owner
61.5	20.8	owner
87	23.6	owner
110.1	19.2	owner
108	17.6	owner
82.8	22.4	owner
69	20	owner
93	20.8	owner
51	22	owner
81	20	owner
75	19.6	non-owner
52.8	20.8	non-owner
64.8	17.2	non-owner
43.2	20.4	non-owner
84	17.6	non-owner
49.2	17.6	non-owner
59.4	16	non-owner
66	18.4	non-owner
47.4	16.4	non-owner
33	18.8	non-owner
51	14	non-owner
63	14.8	non-owner

Answer 1

MATLAB CODE:

% Income vector
Income = [60, 85.5, 64.8, 61.5, 87, 110.1, 108, ...
    82.8, 69, 93, 51, 81, 75, 52.8, 64.8, 43.2, 84, ...
    49.2, 59.4, 66, 47.4, 33, 51, 63];
% Lot Size vector
Lot_Size = [18.4, 16.8, 21.6, 20.8, 23.6, 19.2, 17.6, 22.4, 20, ...
    20.8, 22, 20, 19.6, 20.8, 17.2, 20.4, 17.6, 17.6, ...
    16, 18.4, 16.4, 18.8, 14, 14.8];
% Ownership vector
Ownership = repelem(["owner", "non-owner"],12);
% Three vectors are stored into the Ownership Matrix
OwnershipData = [Income', Lot_Size', Ownership'];
countOwner = 0;
countNonOwner = 0;
A = []; % Matrix to store extracted entries (only column Income & Lot_Size)
for index = 1:length(OwnershipData)
    if(OwnershipData(index, 3) == "owner")
        % When 9 Ownership entries are added to the matrix A,
        % it will stop adding any more entries
        if(countOwner < 9)
            A = [A; OwnershipData(index, 1:2)];
            countOwner = countOwner + 1;
        end
    else
        % When 9 Non Ownership entries are added to the matrix A,
        % it will stop adding any more entries
        if(countNonOwner < 9)
            A = [A; OwnershipData(index, 1:2)];
            countNonOwner = countNonOwner + 1;
        end
    end
end

The Ownership matrix will look like this:

OUTPUT:

MATRIX A =