How to add trendline to scatterplot?

hi, I have 2 variables with data, like

x=2 1 4 68  4 5
y=5 4 2 23 21 50

I want to add trendline to the scatter plot. how can I do that?

Answer 1

[Ameer Hamza]

Something like this

x = [2 1 4 68  4 5]
y = [5 4 2 23 21 50]

p = polyfit(x, y, 1);
px = [min(x) max(x)];
py = polyval(p, px);

scatter(x, y, 'filled')
hold on
plot(px, py, 'LineWidth', 2);

[Ani Asoyan]

Thank you so much !!

[Ameer Hamza]

I am glad to be of help!