Question: plotting an 1-D array

Please see the attached worksheet:

Question 1:  How to plot a partial portion of an array s2 using "dataplot," say the first 50 elements.

Question 2:  I have also tried to use "plot" to plot the first 50 elements s2 and keep on getting errors or strange looking plot with horizontal lines.  I have tried plot(s2,1..50), plot(s2,x=1..50), plot(s2,m=1..50), plot(s2[m],m=1..50), plot(s2[1..50],1..50], plot(1..50,s2[1..50]).

plot_exercise_a.mw

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