http://www.nabble.com/file/p20332968/spe.dat spe.dat
Hi,
i have a problem in sorting out some command in R and i am really hoping
some expert can help me out please!
i have the spe.dat file which i upload here, and when u read into R u got
something like this:
A5 <- read.table('spe.dat' ,header=TRUE)
A5
EXPEND ECAB MET GROW YOUNG OLD WEST STATE
1 256 85.5 19.7 6.9 29.6 11.0 0 ME
2 275 94.3 17.7 14.7 26.4 11.2 0 NH
3 327 87.0 0.0 3.7 28.5 11.2 0 VT
4 297 107.5 85.2 10.2 25.1 11.1 0 MA
5 256 94.9 86.2 1.0 25.3 10.4 0 RI
6 312 121.6 77.6 25.4 25.2 9.6 0 CT
7 374 111.5 85.5 12.9 24.0 10.1 0 NY
8 257 117.9 78.9 25.5 24.8 9.2 0 NJ
9 257 103.1 77.9 7.8 25.7 10.0 0 PA
10 336 116.1 68.8 39.9 26.4 8.0 0 DE
11 269 93.4 78.2 31.1 27.5 7.3 0 MD
12 213 77.2 50.9 21.9 28.8 7.3 0 VA
13 308 108.4 73.1 22.2 28.0 8.2 0 MI
14 273 111.8 69.5 21.8 26.9 9.2 0 OH
15 256 110.8 48.1 18.3 27.5 9.6 0 IN
16 287 120.9 76.9 15.5 25.4 9.7 0 IL
17 290 104.3 46.3 14.9 27.4 10.2 0 WI
18 217 85.1 30.9 -7.4 30.0 9.3 0 WV
19 198 76.8 34.1 0.3 29.4 9.6 0 KY
20 217 75.1 45.8 8.1 28.9 8.7 0 TE
21 195 78.7 24.6 12.4 30.8 6.9 0 NC
22 183 65.2 32.2 12.9 32.9 6.3 0 SC
23 222 73.0 46.0 14.4 30.0 7.4 0 GA
24 283 80.9 65.6 77.2 25.5 11.2 0 FL
25 217 69.4 45.6 7.0 30.5 8.0 1 AL
26 231 57.4 8.6 0.5 32.1 8.7 1 MS
27 329 95.7 51.3 14.4 28.8 10.4 1 MN
28 294 100.2 33.2 5.3 27.3 11.9 1 IA
29 232 99.1 57.9 9.8 25.6 11.7 1 MO
30 369 93.4 10.6 2.9 30.2 9.3 1 ND
31 302 88.2 12.7 4.6 28.9 10.5 1 SD
32 269 99.1 37.6 6.8 26.6 11.6 1 NB
33 291 102.2 37.4 13.7 26.8 11.0 1 KS
34 323 86.0 5.0 21.9 30.3 7.4 1 LA
35 198 68.6 19.1 -6.2 29.4 10.9 1 AR
36 282 84.9 43.9 6.4 27.4 10.7 1 OK
37 246 98.8 63.4 24.1 28.8 7.8 1 TX
38 309 86.2 27.6 39.4 31.5 5.4 1 NM
39 309 90.2 71.4 74.3 29.7 6.9 1 AZ
40 334 97.6 22.6 13.4 28.9 9.7 1 MT
41 284 93.9 0.0 13.3 30.7 8.7 1 ID
42 454 125.8 0.0 13.7 29.1 7.8 1 WY
43 344 98.0 6.8 31.5 28.0 9.0 1 CO
44 307 92.5 67.5 28.7 31.9 6.7 1 UT
45 333 100.4 63.1 19.9 27.5 9.8 1 WA
46 343 98.0 50.4 15.7 27.7 10.4 1 OR
47 421 205.0 74.2 77.8 25.6 6.4 1 NV
48 380 112.6 86.5 48.5 26.2 8.8 1 CA
and using the following command i plot two graph, which the first one is
with two outliners (row 42 and 47)
and the second command, first we created a new set of data frame and use it
for the plot and is without the outliners:
1)plot(A5$ECAB,A5$EXPEND,type='p',main='Per capita expenditure against
economic ability index',
xlab='ECAB',ylab='EXPEND',xlim=c(0,250),ylim=c(100,500),col='red',col.axis='blue')
2)A5e <- A5[c(1:41,43:46,48),c(1,2)]
A5e
plot(A5e$ECAB,A5e$EXPEND,type='p',main='Per capita expenditure against
economic ability index without
outliners',xlab='ECAB',ylab='EXPEND',xlim=c(0,150),ylim=c(150,400),col='red',col.axis='blue')
after that i have been ask to do the following:
'The regression equation for EXPEND depending on ECAB is
E(EXPEND)=119.0+1.73xECAB when there is outliners and
E(EXPEND)=97.8+1.94xECAB when the outliners are omitted from the regression
model. To the plot in 2) without the outliners, use abline() to add a fitted
line for the full regression model, and a coloured, dashed regression line
for the non-outliner regression model.'
Can anyone please help me to look at it and try to sort out the command for
this question for me please?
many thanks.
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