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Department of Computer Science and Engineering CAT 1 Question Paper Programme : CSE Section:E&F Subject : Data Analytics Subject code : CSE Time : 90 Minutes Marks : 30 PART-B (15X2=30) Answer the following questions (^1) What would be the output of the following code? x <- 2 : 4 y <- 6 : x/y Ans (a) 0.1666667 0.2857143 0.4444444 (^) (b) 0.3333333 0. 0.5000000 0. (c) Can’t Divide (^) (d) 0.3333333 0. 0.5000000 0.
d (^2) What would be the result of following code? x <- c(6, FALSE, TRUE, FALSE) class (x) (a) Integer (b) Numeric (c) Real (d) All of the mentioned b (^3) Which of the following statement would print “0” “1” “2” “3” “4” “5” “6” for the following code? x <- 0 : 6 (a) as.character(x) (b)as.logical(x) (c) as.numeric(x) (d) none of the mentioned a (^4) Which of the following extracts [ “c”,”c”,”d”] from the following vector? x <- c ("a", "b", "c", "c", "d", "a") (a) x[2:4] (b) x[c:d] c (c) x[3:5] (d) x[c(3:5)] d (^5) What would be the output of the following code? m <- matrix ( 1 : 6 , byrow=TRUE ) m
(a [, 1 ] [, 2 ] [, 3 ] [, 4 ] [, 5 ] [, 6 ] [ 1 ,] 1 2 3 4 5 6 (b) [,1] [1,] 1 [2,] 2 [3,] 3 [4,] 4 [5,] 5 [6,] 6 (c [, 1 ] [, 2 ] [, 3 ] [ 1 ,] 1 3 6 [ 2 ,] 2 4 5 (d [, 1 ] [, 2 ] [, 3 ] [ 1 ,] 1 2 3 [ 2 ,] 4 5 6 b (^6) What would be the output of the following code? x<-c("yes","no","yes","yes" ) y<-c("F","g","g","F") data<-data.frame(x,y) is.factor(data) is.factor(data$x) (a) FALSE, TRUE (b) FALSE, FALSE (c) TRUE, FALSE (d) TRUE, FALSE a (^7) x<-c("yes","no","yes","yes" ) y<-as.factor(x) is.factor(y) is.factor(x) (a) FALSE, TRUE (b) FALSE, FALSE (c) TRUE, FALSE (^) (d) TRUE, FALSE d (^8) What is syntax for adding a new element 100 at the end of x? x <- list ( 1 , "a", TRUE, list(1, 1+4i), 1 + 4i) (a) list[5]<-100 (b) x[7]<- (c) x[6]<-100 (d) list[6]<-100 c (^9) What will be the output of the following code? x<-data.frame(age=c(34,56,12,45)) normalize <- function(x){ nominator <- x-min(x) denominator <- max(x)-min(x) normalize <- nominator/denominator return(normalize) } normalize(x)
PART-B (2X10=20)
Answer ALL Questions
- You want support from your organization’s decision makers (Board, Senior Management) to implement some of the ideas you gain from this course. The end result should be minute taking standards for your organization. How will you formalize the minute taking standards?
- Create a fashion case study template using Microsoft word? (10) -------------ALL THE BEST-----------------------
