R new calculated field by dividing sum of 1 column with count of category list [duplicate]
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Calculate group mean (or other summary stats) and assign to original data
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I have a dataframe with 2 columns:
Price . Category
10 . Cat-A
5 . Cat-B
20 . Cat-A
30 . Cat-A
15 . Cat-B
So, I have count = 3 for Cat-A and thus I need a new column which sums the price for Cat-A and divides by the count of category i.e., (10+20+30)/3 = 20
Final table should look like this:
Price . Category . Ratio
10 . Cat-A . 20
5 . Cat-B . 10
20 . Cat-A . 20
30 . Cat-A . 20
15 . Cat-B . 10
r
asked Nov 11 at 0:43
A_K
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Nov 11 at 0:52
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
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up vote
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This question already has an answer here:
Calculate group mean (or other summary stats) and assign to original data
4 answers
I have a dataframe with 2 columns:
Price . Category
10 . Cat-A
5 . Cat-B
20 . Cat-A
30 . Cat-A
15 . Cat-B
So, I have count = 3 for Cat-A and thus I need a new column which sums the price for Cat-A and divides by the count of category i.e., (10+20+30)/3 = 20
Final table should look like this:
Price . Category . Ratio
10 . Cat-A . 20
5 . Cat-B . 10
20 . Cat-A . 20
30 . Cat-A . 20
15 . Cat-B . 10
r
asked Nov 11 at 0:43
A_K
12
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Nov 11 at 0:52
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
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up vote
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down vote
favorite
up vote
0
down vote
favorite
This question already has an answer here:
Calculate group mean (or other summary stats) and assign to original data
4 answers
I have a dataframe with 2 columns:
Price . Category
10 . Cat-A
5 . Cat-B
20 . Cat-A
30 . Cat-A
15 . Cat-B
So, I have count = 3 for Cat-A and thus I need a new column which sums the price for Cat-A and divides by the count of category i.e., (10+20+30)/3 = 20
Final table should look like this:
Price . Category . Ratio
10 . Cat-A . 20
5 . Cat-B . 10
20 . Cat-A . 20
30 . Cat-A . 20
15 . Cat-B . 10
r
asked Nov 11 at 0:43
A_K
12
This question already has an answer here:
Calculate group mean (or other summary stats) and assign to original data
4 answers
I have a dataframe with 2 columns:
Price . Category
10 . Cat-A
5 . Cat-B
20 . Cat-A
30 . Cat-A
15 . Cat-B
So, I have count = 3 for Cat-A and thus I need a new column which sums the price for Cat-A and divides by the count of category i.e., (10+20+30)/3 = 20
Final table should look like this:
Price . Category . Ratio
10 . Cat-A . 20
5 . Cat-B . 10
20 . Cat-A . 20
30 . Cat-A . 20
15 . Cat-B . 10
This question already has an answer here:
Calculate group mean (or other summary stats) and assign to original data
4 answers
r
r
asked Nov 11 at 0:43
A_K
12
asked Nov 11 at 0:43
A_K
12
edited Nov 11 at 0:47
asked Nov 11 at 0:43
A_K
12
asked Nov 11 at 0:43
A_K
12
asked Nov 11 at 0:43
A_K
12
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Nov 11 at 0:52
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1 Answer
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Here's a way using base R assuming your dataframe is called df-
df$Ratio <- ave(df$Price, df$Category, FUN = mean)
answered Nov 11 at 0:47
Shree
2,758321
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1 Answer
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1 Answer
1
active
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active
oldest
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active
oldest
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up vote
0
down vote
Here's a way using base R assuming your dataframe is called df-
df$Ratio <- ave(df$Price, df$Category, FUN = mean)
answered Nov 11 at 0:47
Shree
2,758321
add a comment |
up vote
0
down vote
Here's a way using base R assuming your dataframe is called df-
df$Ratio <- ave(df$Price, df$Category, FUN = mean)
answered Nov 11 at 0:47
Shree
2,758321
add a comment |
up vote
0
down vote
up vote
0
down vote
Here's a way using base R assuming your dataframe is called df-
df$Ratio <- ave(df$Price, df$Category, FUN = mean)
answered Nov 11 at 0:47
Shree
2,758321
Here's a way using base R assuming your dataframe is called df-
df$Ratio <- ave(df$Price, df$Category, FUN = mean)
answered Nov 11 at 0:47
Shree
2,758321
answered Nov 11 at 0:47
Shree
2,758321
answered Nov 11 at 0:47
Shree
2,758321
answered Nov 11 at 0:47
Shree
2,758321
2,758321
add a comment |
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