undergrad level stat homework with R coding

profilepenabo
unknowns.csv
A B C D
7 3.74920168288185 2.99901889108046 1.66002470506008
7 15.2237075305636 2.56358163922627 0.316803359161107
10 19.1708887091314 3.04937980295249 1.02145261684577
6 23.7403029671891 3.05141816174522 1.30562781510852
4 32.8928605420279 5.21739964447623 2.14984505025616
11 4.10426609659358 2.76993267373063 1.49948261296271
7 12.0603677492591 2.80161598661457 1.75397923864461
10 19.0563684047461 2.72259391082116 0.641556908330903
6 22.849468632681 3.33702107623926 1.89082172215424
7 27.2524722184227 3.84059740975717 0.0655148038440328
5 6.78656200864927 3.70087042012736 0.544443603921125
8 10.4623725034812 2.64278315076369 0.415148963277261
6 16.9075045820298 3.29597278127161 0.680257783227408
5 23.2979200839747 1.71182215288542 1.08569367174482
11 28.5751146786021 3.87377978261736 2.55515823357284
13 4.00318666031561 2.67801670645714 0.821191718099784
10 11.5518759526962 3.98067015562854 0.765559622474974
5 19.8024074115788 3.39473636550098 2.05745379070735
7 23.5373372227584 2.16238940287382 0.570867404247048
8 28.225804151765 3.70453507916088 0.967744463103375
10 4.88710572404487 2.66803708794931 0.482773161937216
10 15.1315861672303 3.13865281345451 0.74543970314609
11 17.3646023570417 4.45815410650052 2.02294228198234
9 25.7742330477473 3.1546987351967 0.775128357380079
8 26.9067211843455 3.0970138229915 1.96478707912858
7 3.90519999099686 2.55626859070439 0.159601800534447
6 9.93056326618816 2.89067317642968 1.17503593675678
4 14.8846645413346 3.25995155428011 1.14104344173848
2 22.1532621346804 4.72822593990905 3.41268322283972
6 30.5949285265298 4.03829908364437 1.91328513224812
5 6.00764135680176 3.03797996117488 3.58709027431072
7 8.36662584124597 3.40671252232078 0.854868606024206
6 16.3486635133428 3.6876881982677 1.59583949503229
6 25.9635330781118 1.52056182261129 0.363122954742943
9 32.2445024483142 3.97311016404353 0.454304973559957
9 2.35143465613014 2.22420758106049 0.368452870886003
10 8.94577053279452 3.997272727286 0.526154369559984
7 19.6482884450052 3.10201433715671 2.44667701040339
8 23.3167400084899 3.09609349443183 0.852826584673982
9 26.2248431298321 4.12258863459585 6.56408398491591
8 8.43577465064754 2.42395315652257 0.351305021843087
9 10.5611226597133 3.06216058034557 1.67742680533843
6 20.5486062015313 3.09052329861878 0.473073733753204
8 24.8681943746278 1.85595048901695 2.1319907302237
4 30.9495035638415 2.32360427685068 0.24861334835621
10 3.8888066255917 3.4271176905931 2.69220043329094
12 12.4171481022208 4.45552948042516 1.57726339726924
7 17.2410963154903 3.8112906532512 0.383272262041325
13 24.1738344981441 4.15533222455863 1.30453614799368
3 31.3076498620579 4.63058129367238 0.248748413912198