Im trying to find that how many x values in ID where some values are repeated then based on the new result find the min, max, IQR, and median in overall ;
ID <- c("ID004", "ID004", "ID004", "ID004", "ID006", "ID006", "ID006", "ID006", "ID006", "ID006", "ID006", "ID006", "ID006", "ID006", "ID006", "ID009", "ID009", "ID009", "ID009", "ID009", "ID009", "ID020", "ID020")
D <- c("CMP-001", "CMP-001","CMP-001","CMP-001","CMP-001", "CMP-001","CMP-002", "CMP-002", "CMP-002", "CMP-003", "CMP-003", "CMP-003", "CMP-004", "CMP-004", "CMP-004", "CMP-001", "CMP-001", "CMP-001", "CMP-001", "CMP-002", "CMP-002", "CMP-001", "CMP-001")
X <- c(3,3,3,3,1,1,3,3,3,1,1,1,4,4,4,4,4,4,4,2,2,2,2)
data <- data.frame(ID, D, X)
we first find how many x values per ID as;
ID. No. of X values
ID004. 1
ID006. 4
ID009 2
ID020 1
then based on this result we should get the following result;
Min. Median. Max. IQR
Number of X per ID 1 1.5 4 3-1
I think we need to create a new variable which include values of X per ID. then find the summery statistics for the new variable
Thank you for your help
Hope this answers:
> data %>% group_by(ID) %>% summarise(Min = min(X), Median = median(X), Max = max(X), IQR = IQR(X), No_of_X_values = length(rle(X)[[1]]))
`summarise()` ungrouping output (override with `.groups` argument)
# A tibble: 4 x 6
ID Min Median Max IQR No_of_X_values
<chr> <dbl> <dbl> <dbl> <dbl> <int>
1 ID004 3 3 3 0 1
2 ID006 1 3 4 2.5 4
3 ID009 2 4 4 1.5 2
4 ID020 2 2 2 0 1
>
Can store the ID and No of x values in a new dataframe and take summary statistics for No. of x values:
> x_values <- data %>% group_by(ID) %>% summarise(No_of_X_values = length(rle(X)[[1]]))
`summarise()` ungrouping output (override with `.groups` argument)
> x_values
# A tibble: 4 x 2
ID No_of_X_values
<chr> <int>
1 ID004 1
2 ID006 4
3 ID009 2
4 ID020 1
> summary(x_values$No_of_X_values)
Min. 1st Qu. Median Mean 3rd Qu. Max.
1.0 1.0 1.5 2.0 2.5 4.0