Question

APPLIED STATISTICS 2

USE R CODE! SHOW R CODE

Use data file RecordMath2526.txt, to produce a plot graph with Exam1 as x, Exam2 as y, use Gender as color, and Hw1 as pch.

RecordMath2526 information

Index Gender Hw1        Hw2     Hw3     Exam1   Hw4     Exam2   Hw5     Hw6     Hw7     Final
1       F      9        6       8       60      7       82      10      10      9       69
2       M     10        10      10      94      9       98      10      10      8       91
3       M      9        10      8       79      9       55      10      6       8       43
4       F     10        9       9       91      8       88      10      9       8       84
5       F      9        8       9       71      9       97      10      9       9       89
6       F      9        9       7       64      9       87      10      9       9       58
7       M      9        9       9       55      7       59      10      6       0       68
8       M      9        10      7       71      10      70      10      8       10      59
9       M      8        10      9       81      10      100     10      10      9       98
10      F      9        9       7       76      6       58      10      5       8       50
11      F     10        6       7       69      5       55      10      4       8       47
12      F      9        5       4       46      7       72      10      6       7       78
13      M      9        9       10      71      9       85      10      8       7       67
14      M      8        9       8       60      10      71      10      8       10      75
15      M      10       9       10      71      10      93      10      9       9       67
16      F      9        10      8       70      7       80      10      10      8       83
17      F      9        10      9       72      7       89      10      9       9       78
18      M     10        10      10      80      10      94      10      9       10      71
19      F     10        10      9       66      9       78      10      6       8       83
20      F      8        9       7       78      6       81      9       7       8       84      

APPLIED STATISTICS 2

USE R CODE! SHOW R CODE

Answer 1

The R-code is

#First we need to copy data and save in text file and after ruin this command choose the text file saved

d=read.table(file.choose(),header=T)
d
attach(d)
plot(Exam1,Exam2,col=Gender,pch=Hw1)

# If You want to add legend

plot(Exam1,Exam2,col=Gender,pch=Hw1)
legend("topleft",legend=levels(Gender),col=Gender,pch=Hw1)

The Output of the R-code is

> d=read.table(file.choose(),header=T)
> d
Index Gender Hw1 Hw2 Hw3 Exam1 Hw4 Exam2 Hw5 Hw6 Hw7 Final
1 1 F 9 6 8 60 7 82 10 10 9 69
2 2 M 10 10 10 94 9 98 10 10 8 91
3 3 M 9 10 8 79 9 55 10 6 8 43
4 4 F 10 9 9 91 8 88 10 9 8 84
5 5 F 9 8 9 71 9 97 10 9 9 89
6 6 F 9 9 7 64 9 87 10 9 9 58
7 7 M 9 9 9 55 7 59 10 6 0 68
8 8 M 9 10 7 71 10 70 10 8 10 59
9 9 M 8 10 9 81 10 100 10 10 9 98
10 10 F 9 9 7 76 6 58 10 5 8 50
11 11 F 10 6 7 69 5 55 10 4 8 47
12 12 F 9 5 4 46 7 72 10 6 7 78
13 13 M 9 9 10 71 9 85 10 8 7 67
14 14 M 8 9 8 60 10 71 10 8 10 75
15 15 M 10 9 10 71 10 93 10 9 9 67
16 16 F 9 10 8 70 7 80 10 10 8 83
17 17 F 9 10 9 72 7 89 10 9 9 78
18 18 M 10 10 10 80 10 94 10 9 10 71
19 19 F 10 10 9 66 9 78 10 6 8 83
20 20 F 8 9 7 78 6 81 9 7 8 84
> attach(d)

> plot(Exam1,Exam2,col=Gender,pch=Hw1)

> plot(Exam1,Exam2,col=Gender,pch=Hw1)
> legend("topleft",legend=levels(Gender),col=Gender,pch=Hw1)