The following data relates to the number of items produced per shift by two workers for a number of days.
| Worker A | 19 | 22 | 24 | 27 | 24 | 18 |
| Worker B | 26 | 37 | 40 | 35 | NA | NA |
(a) Write R command to create a list named LT with worker’s data. Also, after creating
the list, do the following tasks:
(i) Use a suitable loop function to compute the mean of number of items
produced by each worker in a single line command.
(ii) Extract the worker A data from it by using two different approaches.
(b) Write R command to create a data frame named DF with worker’s data and do the
following tasks:
(i) Use suitable function to remove NA from the data and then create a scatter
plot.
(ii) Write the known data obtained in step (i) to a .txt file named “WORK”.
Here are the R commands to accomplish the tasks mentioned in your question:
(a) Create a list named LT with worker's data and compute the mean of items produced by each worker:
# Worker A and B data
workerA <- c(19, 22, 24, 27, 24, 18)
workerB <- c(26, 37, 40, 35, NA, NA)
# Create a list named LT with worker's data
LT <- ____ __________ ____ ____ ____.
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Write R commands to create a bar plot of the following data by using arguments of
the used function for filling up the bars and to give labels to the axis:
5, 10, 8, 7, 8, 5, 8, 7, 5, 8, 9, 6, 8, 8, 8
Differentiate between the use of the sep and collapse arguments of the paste() function.
The following data relates to the number of items produced per shift by two workers for a number of days.
| Worker A | 19 | 22 | 24 | 27 | 24 | 18 |
| Worker B | 26 | 37 | 40 | 35 | NA | NA |
Check whether the given loop is finite or infinite. If infinite, do the necessary changes in the written loop to make it finite.
x<-0
repeat{
print(x^2)
x<-x+1
if(x<5) print(x) }
Create following two matrices A and B with following elements.
A=,B=
Write R commands to do the following tasks:
(i) Multiply the two matrices.
(ii) Combine the two matrices row-wise.
(iii) Create a function that computes the following expression:
A 2+3*B
| X | Y | Z | W |
| 0.04 | 0.16 | 0.53 | A |
| 0.82 | 0.87 | 0.84 | A |
| 0.32 | 0.65 | 0.99 | A |
| 0.39 | 0.83 | 0.42 | A |
| 0.31 | 0.93 | 0.78 | A |
| 0.83 | 0.31 | 0.41 | A |
| 0.73 | 0.74 | 0.88 | A |
| 0.32 | 0.39 | 0.50 | B |
| 0.60 | 0.85 | 0.68 | B |
| 0.65 | 0.28 | 0.86 | B |
| 0.55 | 0.95 | 0.77 | B |
| 0.53 | 0.35 | 0.32 | B |
| 0.91 | 0.01 | 0.91 | B |
| 0.84 | 0.61 | 0.37 | B |
Attempt the following:
(a) Write the output of the following statements:
(i) rep(x=c(T,F,T,F), times=c(2,1,2,3))
(ii) 5%/%3; diag(3)
Write R commands to:
(a) Create a function to compute ranks (in case of tied ranks) of the given data.
(b) Create a date object named Ddata consisting of the following dates.
26Jan2023, 15Aug2023, 02Oct2023, 05Sep2023
(c) Create an array of two dimension with following elements.
Also, extract the row shown in the rectangular box.
(d) Create the graph of the following function.
f(x) x , -5 x 5