Homework 05 ready for grading

[angmelanie]

Quick access to homework-05 folder

[jardnzm]

HI @angmelanie

• Thanks for those links, makes things much easier to track.

• Drop Oceania, use both fct_drop() and droplevels(), Check.

• Reorder the levels of country or continent, experimenting with various methods, check.

• Explore the effects of arrange(), tried step by step and also add explanation after each figure. check

• Great visualization improvement. Also used values=country_colors to get the default colors. When you save figure, it would be better if add ggsave(,plot=,) inside, cause it would save the most recent figure( sometimes it is not the figure you wanna save). check

Overall, very solid work.

Best wishes for the next 547course :)

Ziming

[cindyhurtado]

Cindy's peer review

You did a really good job, the md file was well organized, you included useful comments in each functions. You also used two methods to drop the levels of the factors. Also, I got the same results with the arrange() function. I liked all of yours graphs!!

[derekcho]

Hi @angmelanie ! Here are some comments about your hw05:

• Your first task in factor management was well done. Good job on showing how to drop Oceania as a factor using more than one method.
• Although your code is quite readable, it would still be nice to have some text in each section explaining what is going on and what the effects of certain functions are. You have informative section headers and inline comments (in the code), but more explanations would be nice too
• Task 2 was also generally well done. Coding was efficient and effective and showing different ways to reorder factor levels in gapminder. I would suggest having a table with all of the min/median gdpPercap values for each continent so that the reader can make sure that each reorder function is doing what you are describing.
• You should show the effects of the read and write csv functions (just the head of the table is fine). Although your code executes without any error messages, are the results as intended? Do you need to use additional arguments as well?
• Good work showing the effects of arrange and factor reordering with arrange, this section was well done!
• Although your plot uses a new palette of colors, it isn’t immediately clear why there are so many points for a single plot (pretend that I haven’t seen this dataset before and don’t know that these correspond to different years). Also, the reader may not know how the relationship between Life Expectancy vs. GDP per Capita is affected by time. For Bangladesh, the trend is quite clear and we can assume the most recent year is at the top right, but for Afghanistan this is not clear.
• Solid work overall, you were able to demonstrate how to use and deal with factors effectively. Your assignment hits all of the elements and does a good job at it. My main suggestion would be to include more explanations between code, results and tables, but otherwise things were well done. See you in STAT 547M!

Note: your mark (check minus, check, check plus) will be distributed later.