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daroczig / CEU-R-intro

Data Analysis 1a: Foundation of Data management in R @ CEU
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week 5 last task #30

Closed kgbgergo closed 6 years ago

kgbgergo commented 6 years ago

Hi Gergely

I get feedback saying "The contents of the variable dsummary aren't correct. " My dsummary looks this: cut price 1: Ideal 3457.542 2: Good 3928.864 3: Very Good 3981.760 4: Fair 4358.758 5: Premium 4584.258

My plot looks this: kep

Please let me know what I did wrong. Thanks!

daroczig commented 6 years ago

I think you reordered the rows of dsummary instead of the factor levels. FTR dsummary should look like:

> dsummary
         cut    price
1:     Ideal 3457.542
2:   Premium 4584.258
3:      Good 3928.864
4: Very Good 3981.760
5:      Fair 4358.758
> str(dsummary)
Classes ‘data.table’ and 'data.frame':  5 obs. of  2 variables:
 $ cut  : Ord.factor w/ 5 levels "Ideal"<"Good"<..: 1 5 2 3 4
 $ price: num  3458 4584 3929 3982 4359
 - attr(*, ".internal.selfref")=<externalptr>

Let me know if this helps or would you need any further pointers or if you see any issues with the exercise, and I'll reopen the ticket