Psychology Data plotting

Hi!

I was in a psychology lesson where the whole class took part in a memory experiment, where we had to remember 15 words. We did this experiment twice but differently. We collected the data, on how many people were able to remember each word. We where told to plot it as a line graph.

The thing is I plotted mine wrong. Did know what the x or y axis should consiy of etc. I need help and advice and also revision tips.

Thank you