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NBA ANALYSIS USING R MATRIX QUESTIONS 22 55 25 16 100 25 66 82 29 18 22 85WRITE CODE FOR NEXT 10 QUESTIONS USING THE IMAGE ABOVE !!

1.Create a matrix (called scores) in the picture above, using MATRIX function.

2. Create a matrix (called scores) in the picture above, using RBIND function.

3. Create a matrix (called scores) in the picture above, using CBIND function.

4. Print out number 66 from the scores matrix.

5. Print out numbers number 16, 82, 85 from the scores matrix.  Hint: scores [ , 2] prints the numbers 55, 25, 18.

6. Print out numbers number 100, 25, 66, 82 from the scores matrix.

7. Create a vector called names with values “Bob”, “Julie”, “Tom” and assign these names to each row of the scores matrix..

8. Create a vector called years with values “2010”, “2011”, “2012”, “2013” and assign the years to each column of the scores matrix.

9. Print out number 100 by using named row and column from last 2 questions.  Hint: scores ['Bob', '2010'] prints 22.

10. Print out the scores for Julie for years 2012 and 2013.

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Answer #1

PLEASE LIKE THIS ANSWER, IT HELPS ME A LOT. THANK YOU!!!

1.

scores = matrix(c(22,100,29,55,25,18,25,66,22,16,82,85),nrow=3,ncol=4)
scores #printing matrix to the screen
scores[2,3]  #Question-4

2.

scores = cbind(c(22,100,29),c(55,25,18),c(25,66,22),c(16,82,85))
scores #printing matrix to the screen
scores[2,3] #Question-4

3.

x1 <- c(22,100,29)
x2 <- c(55,25,18)
x3 <- c(25,66,22)
x4 <- c(16,82,85)

data_1 <- data.frame(x1,x2,x3,x4)

scores = rbind(data_1)
scores #printing matrix to the screen

scores[2,3]  #Question-4

output is

  [,1] [,2] [,3] [,4]
[1,]   22   55   25   16
[2,]  100   25   66   82
[3,]   29   18   22   85
[1] 66
     [,1] [,2] [,3] [,4]
[1,]   22   55   25   16
[2,]  100   25   66   82
[3,]   29   18   22   85
[1] 66
   x1 x2 x3 x4
1  22 55 25 16
2 100 25 66 82
3  29 18 22 85
[1] 66

scores<- matrix(c(22,55,25,16,100,25,66,82,29,18,22,85), nrow = 3, byrow = TRUE)
print(scores)
#######part 5
print(scores[,4])

######part 6
print(scores[2,])

#####part 7
names<-c('Bob','Julie','Tom')
rownames(scores)<-names
#print(scores)

######part 8
years<-c('2010','2011','2012','2013')
colnames(scores)<-years

#####part 9
print(scores['Julie','2010'])

#####part10
print(scores['Julie',c('2012','2013')])

5 3 scores<- matrix(c(22,55,25,16,100,25,66,82, 29,18,22,85), nrow = 3, byrow = TRUE) 4 print (scores) #####part 5 6 print (s

3 scores<- matrix(c(22,55,25,16,100,25,66,82,29,18,22,85), nrow = 3, byrow = TRUE) 4 print (scores) 5 #######part 5 6 print (scores[,4]) 8 ######part 6 9 print (scores [2,]) 11 #####part 7 12 names<-c('Bob', 'Julie', 'Tom') 13 rownames (scores)<-names 14 #print(scores) 15 16 ######part 8 17 years<-c('2010', '2011','2012', '2013') 18 colnames (scores)<-years 20 #####part 9 21 print (scores['Julie', '2010']) 22 23 #####part 10 24 print (scores ['Julie',c("2012', '2013'))) Run it (F8) Save it [ + ] Show input Absolute running time: 0.46 sec, cpu time: 0.47 sec, memory peak: 30 Mb, absolute service time: 0,47 sec [,1] [,2] [,3] [,4] [1,] 22 55 25 16 [2,] 100 25 66 82 [3,] 29 18 22 85 [1] 16 82 85 [1] 100 25 66 82 [1] 100 2012 2013 66 82

3 scores<- matrix(c(22,55,25,16,100,25,66,82,29,18,22,85), nrow = 3, byrow = TRUE) 4 print (scores) 5 #######part 5 6 print (scores[,4]) 8 ######part 6 9 print (scores [2,]) 11 #####part 7 12 names<-c('Bob', 'Julie', 'Tom') 13 rownames (scores)<-names 14 #print(scores) 15 16 ######part 8 17 years<-c('2010', '2011','2012', '2013') 18 colnames (scores)<-years 20 #####part 9 21 print (scores['Julie', '2010']) 22 23 #####part 10 24 print (scores ['Julie',c("2012', '2013'))) Run it (F8) Save it [ + ] Show input Absolute running time: 0.46 sec, cpu time: 0.47 sec, memory peak: 30 Mb, absolute service time: 0,47 sec [,1] [,2] [,3] [,4] [1,] 22 55 25 16 [2,] 100 25 66 82 [3,] 29 18 22 85 [1] 16 82 85 [1] 100 25 66 82 [1] 100 2012 2013 66 82

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