These exercises are about the vector sections of Introduction to R.
Exercise 1
Have a look at all files in notepad or excel before attempting to read. All files can be found in the “data” directory.
Read in the tab delimited file “GeneExpression.txt”.
Find the mean expression of all samples.
## Sample_1.hi Sample_2.hi Sample_3.hi Sample_4.low Sample_5.low Sample_1.low
## 7.514996 6.774108 6.508127 6.262253 6.177761 6.017462
## Sample_1.hi Sample_2.hi Sample_3.hi Sample_4.low Sample_5.low Sample_1.low
## 7.514996 6.774108 6.508127 6.262253 6.177761 6.017462
## Sample_1.hi Sample_2.hi Sample_3.hi Sample_4.low Sample_5.low
## Gene_a 5.742510 3.214303 4.116820 3.212353 5.742333
## Gene_b 6.444368 5.896076 2.592581 5.089549 3.624812
## Gene_c 3.083392 3.414723 3.706069 4.535536 5.104273
## Gene_d 4.726498 3.023746 3.033173 8.017895 8.098800
## Gene_e 9.909185 9.174323 9.957153 2.053501 3.276533
## Gene_f 10.680459 9.951243 8.985412 3.360963 3.566663
## Gene_g 10.516534 10.176163 9.778173 11.781520 9.005437
## Gene_h 9.017020 9.342291 9.895636 12.046704 11.003240
## Sample_1.low
## Gene_a 5.9350948
## Gene_b 2.6313925
## Gene_c 5.7149521
## Gene_d 8.1964109
## Gene_e 0.7332521
## Gene_f 3.8519471
## Gene_g 11.1733928
## Gene_h 9.9032500
## Sample_1.hi Sample_2.hi Sample_3.hi Sample_4.low Sample_5.low
## Gene_a 5.742510 3.214303 4.116820 3.212353 5.742333
## Gene_b 6.444368 5.896076 2.592581 5.089549 3.624812
## Gene_c 3.083392 3.414723 3.706069 4.535536 5.104273
## Gene_d 4.726498 3.023746 3.033173 8.017895 8.098800
## Gene_e 9.909185 9.174323 9.957153 2.053501 3.276533
## Gene_f 10.680459 9.951243 8.985412 3.360963 3.566663
## Gene_g 10.516534 10.176163 9.778173 11.781520 9.005437
## Gene_h 9.017020 9.342291 9.895636 12.046704 11.003240
## Sample_1.low
## Gene_a 5.9350948
## Gene_b 2.6313925
## Gene_c 5.7149521
## Gene_d 8.1964109
## Gene_e 0.7332521
## Gene_f 3.8519471
## Gene_g 11.1733928
## Gene_h 9.9032500