There is no correlation between Duration and Tower Damage and there are no clusters. The values are standardized.
Duration Tower Damage
Abaddon -0.906268 0.030919
Alchemist -0.558111 0.422029
Ancient Apparition 2.053064 -1.087931
Anti-Mage 0.022150 1.467903
Arc Warden 0.370306 1.271675
Axe 0.969910 -0.789807
Bane 0.157544 -0.943998
Batrider -0.306665 -1.134508
Beastmaster -2.028106 0.200915
Bloodseeker 1.163330 0.304158
Bounty Hunter -0.442059 -0.865137
Brewmaster -0.809558 0.456499
Bristleback 0.757147 -0.092333
Broodmother -3.207971 1.801675
Centaur Warrunner 0.118860 -0.274941
Chaos Knight -0.809558 0.899398
Chen -2.550341 0.095823
Clinkz -0.267981 1.376935
Clockwerk 0.428333 -1.063886
Crystal Maiden 0.312280 -1.143588
Dark Seer 0.234912 -0.932564
Dark Willow 0.931226 -0.657811
Dawnbreaker -0.674164 -0.343545
Dazzle -0.577453 -0.992088
Death Prophet 0.041492 0.173339
Disruptor 0.234912 -1.237414
Doom 0.718463 -0.873880
Dragon Knight -0.055218 0.834830
Drow Ranger 1.143988 1.300260
Earth Spirit -0.577453 -1.017142
Earthshaker 0.873199 -0.533214
Elder Titan 1.163330 -0.651926
Ember Spirit -0.016534 -0.382387
Enchantress 0.544385 -0.388104
Enigma 0.583069 -0.704893
Faceless Void 1.027936 0.440189
Grimstroke 0.118860 -1.130977
Gyrocopter -0.422717 1.641767
Hoodwink 1.105304 -0.842941
Huskar -1.351135 0.706029
Invoker 0.621753 -0.007419
Io -2.975866 -0.816542
Jakiro 0.583069 -0.333120
Juggernaut -0.403375 1.325651
Keeper of the Light 0.234912 -1.121393
Kunkka 0.931226 -0.285702
Legion Commander -0.345349 0.480039
Leshrac -0.229297 0.481048
Lich 0.834515 -1.185793
Lifestealer -0.480743 1.089068
Lina 0.718463 0.201756
Lion 0.525043 -1.219591
Lone Druid -3.072576 3.412859
Luna -0.654822 1.673883
Lycan -2.453631 1.912652
Magnus -0.209955 -0.732132
Marci -1.583239 -0.344217
Mars -0.074560 -0.649068
Medusa 1.820959 0.875857
Meepo -2.975866 1.805710
Mirana 0.408991 -0.728938
Monkey King -0.267981 0.388736
Morphling -1.389819 1.973353
Muerta 1.105304 1.328845
Naga Siren -0.538769 1.557525
Nature's Prophet -0.209955 0.689551
Necrophos -0.229297 -0.600305
Night Stalker -0.538769 0.206464
Nyx Assassin 0.679779 -1.068931
Ogre Magi 0.254254 -0.790479
Omniknight -0.616138 -0.509506
Oracle -1.177057 -1.199245
Outworld Destroyer -0.074560 0.447083
Pangolier 0.022150 -0.459398
Phantom Assassin -0.461401 0.583282
Phantom Lancer 0.757147 0.966657
Phoenix 0.254254 -0.911545
Primal Beast -0.035876 -0.654280
Puck -0.074560 -0.252409
Pudge -0.055218 -1.001840
Pugna 0.118860 0.133825
Queen of Pain 0.602411 -0.133697
Razor 0.467017 0.349557
Riki 0.950568 -0.297641
Rubick 0.583069 -1.163766
Sand King 1.260040 -0.896748
Shadow Demon 0.602411 -1.058842
Shadow Fiend -0.944952 1.945440
Shadow Shaman 0.157544 0.059504
Silencer 0.679779 -0.626704
Skywrath Mage 0.563727 -1.130809
Slardar -0.229297 -0.254090
Slark -0.113245 0.692577
Snapfire 0.312280 -0.579455
Sniper 1.530829 0.949338
Spectre 1.318066 0.192004
Spirit Breaker -0.035876 -0.905996
Storm Spirit 0.234912 -0.255099
Sven -0.055218 1.537684
Techies 1.898327 -0.877411
Templar Assassin -0.944952 1.302614
Terrorblade -0.248639 2.201528
Tidehunter -0.209955 -0.282507
Timbersaw 0.041492 -0.610562
Tinker 0.718463 -1.283150
Tiny -0.055218 0.082540
Treant Protector -0.732190 -0.821082
Troll Warlord -0.693506 2.426677
Tusk -0.403375 -0.884810
Underlord 0.215570 -0.256108
Undying -0.074560 -1.022690
Ursa 0.292938 0.166109
Vengeful Spirit -0.809558 -0.938112
Venomancer 0.679779 -0.813516
Viper 1.530829 0.325176
Visage -2.202185 1.757452
Void Spirit -0.364691 0.114488
Warlock 0.196228 -0.180274
Weaver 0.892541 1.059474
Windranger 1.008594 -0.013304
Winter Wyvern 0.950568 -0.941980
Witch Doctor 0.911884 -1.157881
Wraith King -0.442059 1.240568
Zeus 1.704907 -1.017814