Apple

[1] "AAPL"

Microsoft

Twitter

[1] "TWTR"

Conclusion: I would want to invests for Microsoft based on my code and graph. From my graph, we can see that Twitter varies the most and looks like it is decreasing recently. Then, let’s look at Apple and Microsoft, they looks similar, however Microsoft looks like it’s more stable. Let’s find the variance for both Microsoft and Apple……In conclusion, I believe that microsoft maximizing the profits for long term gain. Since Apple have a larger variance, then, it should be good to considering a short term investment.