How can use the which() function to select rows from a data frame in R?2019 Community Moderator ElectionFilter data.frame rows by a logical conditionDrop factor levels in a subsetted data frameHow to join (merge) data frames (inner, outer, left, right)?R - list to data frameDrop data frame columns by nameExtracting specific columns from a data frameHow can we make xkcd style graphs?Select rows from a data frame using an array in RSelecting rows maintaining distribution percentage?R- Create function that selects entire row in data frame by column nameIn R, subtract value from previous row in data frame based on hierarchical data structure
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How can use the which() function to select rows from a data frame in R?
2019 Community Moderator ElectionFilter data.frame rows by a logical conditionDrop factor levels in a subsetted data frameHow to join (merge) data frames (inner, outer, left, right)?R - list to data frameDrop data frame columns by nameExtracting specific columns from a data frameHow can we make xkcd style graphs?Select rows from a data frame using an array in RSelecting rows maintaining distribution percentage?R- Create function that selects entire row in data frame by column nameIn R, subtract value from previous row in data frame based on hierarchical data structure
-1
Given the attached data set how can I calculate the percentage of students with grades between 55% and 75% (inclusive) using one line of R code, using the 'which()' R command to select rows?
ID age hours grade
284236 20 133 80
254494 20 140 74
229943 19 85 79
298668 20 49 72
221297 36 129 78
194162 37 53 77
162842 25 130 80
203841 35 100 61
250607 32 99 73
297495 14 69 71
110986 29 24 67
297498 43 22 80
210499 20 122 69
199181 20 18 74
174800 18 88 75
280547 20 23 74
169474 18 102 70
252912 17 47 78
186855 19 121 77
150336 17 57 80
r
edited Mar 6 at 13:53
Saurabh Chauhan
2,2521824
asked Mar 6 at 13:53
peterpeter
11
New contributor
peter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
|
show 2 more comments
-1
Given the attached data set how can I calculate the percentage of students with grades between 55% and 75% (inclusive) using one line of R code, using the 'which()' R command to select rows?
ID age hours grade
284236 20 133 80
254494 20 140 74
229943 19 85 79
298668 20 49 72
221297 36 129 78
194162 37 53 77
162842 25 130 80
203841 35 100 61
250607 32 99 73
297495 14 69 71
110986 29 24 67
297498 43 22 80
210499 20 122 69
199181 20 18 74
174800 18 88 75
280547 20 23 74
169474 18 102 70
252912 17 47 78
186855 19 121 77
150336 17 57 80
r
edited Mar 6 at 13:53
Saurabh Chauhan
2,2521824
asked Mar 6 at 13:53
peterpeter
11
New contributor
peter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
4
What did you try so far?
– Sotos
Mar 6 at 13:55
Try this:subset(df,grade>=55 & grade<=75)and do your operation.
– Saurabh Chauhan
Mar 6 at 13:56
6
Is usingwhich()a constraint imposed by a homework assignment?
– John Coleman
Mar 6 at 13:58
@JohnColeman Yes, of course! Along with using one-line of code
– Sotos
Mar 6 at 13:59
2
This will help you understand how to usewhich()to subset a vector or a data frame. I definitely don't want your professor to give me a good grade :) Hint:which(df$grade >= 55 & df$grade <= 75)will give you the relevantdfrows number anddf$grade[which(df$grade >= 55 & df$grade <= 75)]ordf$grade[df$grade >= 55 & df$grade <= 75]the relevent components of the vectordf$grade. Now try to compute themean
– ANG
Mar 6 at 14:14
|
show 2 more comments
-1
-1
-1
Given the attached data set how can I calculate the percentage of students with grades between 55% and 75% (inclusive) using one line of R code, using the 'which()' R command to select rows?
ID age hours grade
284236 20 133 80
254494 20 140 74
229943 19 85 79
298668 20 49 72
221297 36 129 78
194162 37 53 77
162842 25 130 80
203841 35 100 61
250607 32 99 73
297495 14 69 71
110986 29 24 67
297498 43 22 80
210499 20 122 69
199181 20 18 74
174800 18 88 75
280547 20 23 74
169474 18 102 70
252912 17 47 78
186855 19 121 77
150336 17 57 80
r
edited Mar 6 at 13:53
Saurabh Chauhan
2,2521824
asked Mar 6 at 13:53
peterpeter
11
New contributor
peter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Given the attached data set how can I calculate the percentage of students with grades between 55% and 75% (inclusive) using one line of R code, using the 'which()' R command to select rows?
ID age hours grade
284236 20 133 80
254494 20 140 74
229943 19 85 79
298668 20 49 72
221297 36 129 78
194162 37 53 77
162842 25 130 80
203841 35 100 61
250607 32 99 73
297495 14 69 71
110986 29 24 67
297498 43 22 80
210499 20 122 69
199181 20 18 74
174800 18 88 75
280547 20 23 74
169474 18 102 70
252912 17 47 78
186855 19 121 77
150336 17 57 80
r
r
edited Mar 6 at 13:53
Saurabh Chauhan
2,2521824
asked Mar 6 at 13:53
peterpeter
11
New contributor
peter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited Mar 6 at 13:53
Saurabh Chauhan
2,2521824
asked Mar 6 at 13:53
peterpeter
11
New contributor
peter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited Mar 6 at 13:53
Saurabh Chauhan
2,2521824
edited Mar 6 at 13:53
Saurabh Chauhan
2,2521824
edited Mar 6 at 13:53
Saurabh Chauhan
2,2521824
2,2521824
asked Mar 6 at 13:53
peterpeter
11
New contributor
peter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Mar 6 at 13:53
peterpeter
11
asked Mar 6 at 13:53
peterpeter
11
11
New contributor
peter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
peter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
peter is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
4
What did you try so far?
– Sotos
Mar 6 at 13:55
Try this:subset(df,grade>=55 & grade<=75)and do your operation.
– Saurabh Chauhan
Mar 6 at 13:56
6
Is usingwhich()a constraint imposed by a homework assignment?
– John Coleman
Mar 6 at 13:58
@JohnColeman Yes, of course! Along with using one-line of code
– Sotos
Mar 6 at 13:59
2
This will help you understand how to usewhich()to subset a vector or a data frame. I definitely don't want your professor to give me a good grade :) Hint:which(df$grade >= 55 & df$grade <= 75)will give you the relevantdfrows number anddf$grade[which(df$grade >= 55 & df$grade <= 75)]ordf$grade[df$grade >= 55 & df$grade <= 75]the relevent components of the vectordf$grade. Now try to compute themean
– ANG
Mar 6 at 14:14
|
show 2 more comments
4
What did you try so far?
– Sotos
Mar 6 at 13:55
Try this:subset(df,grade>=55 & grade<=75)and do your operation.
– Saurabh Chauhan
Mar 6 at 13:56
6
Is usingwhich()a constraint imposed by a homework assignment?
– John Coleman
Mar 6 at 13:58
@JohnColeman Yes, of course! Along with using one-line of code
– Sotos
Mar 6 at 13:59
2
This will help you understand how to usewhich()to subset a vector or a data frame. I definitely don't want your professor to give me a good grade :) Hint:which(df$grade >= 55 & df$grade <= 75)will give you the relevantdfrows number anddf$grade[which(df$grade >= 55 & df$grade <= 75)]ordf$grade[df$grade >= 55 & df$grade <= 75]the relevent components of the vectordf$grade. Now try to compute themean
– ANG
Mar 6 at 14:14
4
4
What did you try so far?
– Sotos
Mar 6 at 13:55
What did you try so far?
– Sotos
Mar 6 at 13:55
Try this:
subset(df,grade>=55 & grade<=75) and do your operation.– Saurabh Chauhan
Mar 6 at 13:56
Try this:
subset(df,grade>=55 & grade<=75) and do your operation.– Saurabh Chauhan
Mar 6 at 13:56
6
6
Is using
which() a constraint imposed by a homework assignment?– John Coleman
Mar 6 at 13:58
Is using
which() a constraint imposed by a homework assignment?– John Coleman
Mar 6 at 13:58
@JohnColeman Yes, of course! Along with using one-line of code
– Sotos
Mar 6 at 13:59
@JohnColeman Yes, of course! Along with using one-line of code
– Sotos
Mar 6 at 13:59
2
2
This will help you understand how to use
which() to subset a vector or a data frame. I definitely don't want your professor to give me a good grade :) Hint: which(df$grade >= 55 & df$grade <= 75) will give you the relevant df rows number and df$grade[which(df$grade >= 55 & df$grade <= 75)] or df$grade[df$grade >= 55 & df$grade <= 75] the relevent components of the vector df$grade. Now try to compute the mean– ANG
Mar 6 at 14:14
This will help you understand how to use
which() to subset a vector or a data frame. I definitely don't want your professor to give me a good grade :) Hint: which(df$grade >= 55 & df$grade <= 75) will give you the relevant df rows number and df$grade[which(df$grade >= 55 & df$grade <= 75)] or df$grade[df$grade >= 55 & df$grade <= 75] the relevent components of the vector df$grade. Now try to compute the mean– ANG
Mar 6 at 14:14
|
show 2 more comments
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4
What did you try so far?
– Sotos
Mar 6 at 13:55
Try this:
subset(df,grade>=55 & grade<=75)and do your operation.– Saurabh Chauhan
Mar 6 at 13:56
6
Is using
which()a constraint imposed by a homework assignment?– John Coleman
Mar 6 at 13:58
@JohnColeman Yes, of course! Along with using one-line of code
– Sotos
Mar 6 at 13:59
2
This will help you understand how to use
which()to subset a vector or a data frame. I definitely don't want your professor to give me a good grade :) Hint:which(df$grade >= 55 & df$grade <= 75)will give you the relevantdfrows number anddf$grade[which(df$grade >= 55 & df$grade <= 75)]ordf$grade[df$grade >= 55 & df$grade <= 75]the relevent components of the vectordf$grade. Now try to compute themean– ANG
Mar 6 at 14:14