how to find min and max and average value in 2D chart 5x20

hi i need help !

i have this problem :

if i run it he ask me what of all these function use i type 1 bcs my problem is it.After matlab starting and runing the first function

in a getCurrentAverage.m file that returns the N position vector with the current values in each YC product, the N position vector with the lowest values in each YMIN product, the N position vector with the highest values in each YMAX product and the N positions with average prices on each YA product.with using repeat FOR

%Áñ÷éêüò êþäéêáò project

filename = 'data.csv'; %filename of data file

%Ôï áñ÷åßï ðñÝðåé íá Ý÷åé 5 ãñáììÝò êáé 20 óôÞëåò üðùò ôï data.csv

X = csvread(filename); %Reading the data

%Ïíüìáôá ðñïúïíôùí - èá ÷ñåéáóôåß åäþ íá âÜëåôå ôá äéêÜ óáò

Names{1} = 'xiaomi redmi note 9';

Names{2} = 'xiaomi redmi 9c';

Names{3} = 'huawei p smart 2020';

Names{4} = 'xiaomi redmi 9';

Names{5} = 'samsung galaxy A21';

N = size(X,1); %N = 5

M = size(X,2); %M = 20

%èá ÷ñåéáóôåß íá áëëÜîåôå ôï ðáñáêÜôù ìýíçìá s óýìöùíá ìå ôçí åêöþíçóç

s = sprintf('Dwse 0 gia exit,\n 1 gia ektelesh ths getCurrentMinMaxAverage, \n 2 gia ektelesh ths plotProducts,\n 3 gia ektelesh ths sortProducts,\n4 gia ektelesh ths plotBestModel,\n5 gia ektelesh ths getCorrelated');

ok = 1;

while ok ~= 0,

ok = input(s);

%èá ÷ñåéáóôåß íá áëëÜîåôå ôïí ðáñáêÜôù êþäéêá óýìöùíá ìå ôçí åêöþíçóç

if ok == 0,

disp('Exit');

elseif ok == 1,

[YC,YMIN,YMAX,YA] = getCurrentMinMaxAverage(X,Names);

elseif ok == 2,

[Y] = plotProducts(X,Names);

elseif ok == 3,

[Y] = sortProducts(X,Names);

elseif ok == 4,

[Y] = plotBestModel(X,Names);

elseif ok == 5,

[a,b,c,d] = getCorrelated(X,Names);

else

disp('La8os eisodos');

end

end