Hi, I have a question where I'm asked to compare two varieties of corn (A and B) and decide which one the farmer should plant in the future. A grid was given which showed 32 equally sized plots with Variety A planted randomly in 16 plots and Variety B in the remaining. The yield in kg was given for each plot. I made a back to back stem and leaf plot which looks like this:

I then used my TI calculator to determine the mean yield and standard deviation for both types. I got:

Variety A: mean yield = 11.2 kg and standard deviation = 0.27 kg

Variety B: mean yield = 10.09 kg and standard deviation = 0.54 kg

I am not sure what I should say and discuss in my justification for which Variety is better. I think it's Type A but I have no idea what I should be saying to justify why using these answers (and how standard deviation is used to justify this). I also need to suggest why the plots for Variety A were randomly selected.

Thanks for your help!