The correlation between Assists and Deaths is 0.53. The more Assists, the more Deaths, and vice versa. But some values are higher than expected, some are lower. Efficiency is a difference between the value of Deaths depending on Assists (blue dots) with respect to the expected value (red line).
Efficiency
Huskar 3.0071
Witch Doctor 2.4425
Shadow Shaman 2.2860
Lion 1.9690
Vengeful Spirit 1.9498
Techies 1.7828
Pudge 1.7774
Lina 1.7311
Nyx Assassin 1.5712
Axe 1.4300
Broodmother 1.3976
Nature's Prophet 1.3845
Dazzle 1.3510
Leshrac 1.2823
Tusk 1.1982
Troll Warlord 1.1279
Crystal Maiden 1.1209
Enigma 1.0785
Gyrocopter 1.0239
Razor 0.9626
Marci 0.9193
Slardar 0.8796
Earth Spirit 0.8564
Viper 0.8489
Legion Commander 0.7538
Shadow Fiend 0.7379
Ursa 0.7225
Clockwerk 0.7210
Earthshaker 0.6852
Sand King 0.6848
Venomancer 0.6390
Bristleback 0.6367
Phantom Assassin 0.6034
Shadow Demon 0.5867
Chaos Knight 0.5587
Dark Willow 0.5364
Lich 0.5234
Silencer 0.5233
Jakiro 0.5117
Monkey King 0.4946
Skywrath Mage 0.4617
Clinkz 0.3984
Elder Titan 0.2940
Batrider 0.2782
Pugna 0.2671
Doom 0.2612
Necrophos 0.2299
Primal Beast 0.2202
Enchantress 0.2034
Bounty Hunter 0.1826
Ogre Magi 0.1822
Rubick 0.1464
Beastmaster 0.1412
Winter Wyvern 0.1367
Timbersaw 0.1291
Grimstroke 0.0746
Phoenix 0.0362
Slark 0.0331
Drow Ranger 0.0305
Outworld Destroyer 0.0289
Tiny 0.0039
Bane -0.0061
Snapfire -0.0121
Omniknight -0.0192
Muerta -0.0255
Sniper -0.0438
Luna -0.0678
Ancient Apparition -0.0751
Death Prophet -0.1279
Undying -0.1483
Sven -0.1693
Treant Protector -0.1837
Mars -0.1944
Meepo -0.2432
Bloodseeker -0.2472
Disruptor -0.2779
Dawnbreaker -0.3292
Centaur Warrunner -0.3627
Pangolier -0.3863
Templar Assassin -0.3961
Arc Warden -0.4243
Dragon Knight -0.4367
Night Stalker -0.4759
Magnus -0.5092
Riki -0.5773
Juggernaut -0.6191
Alchemist -0.6453
Io -0.6541
Windranger -0.6610
Lone Druid -0.6631
Storm Spirit -0.6653
Morphling -0.7071
Terrorblade -0.7154
Oracle -0.7508
Weaver -0.7587
Spirit Breaker -0.7728
Hoodwink -0.7798
Kunkka -0.7895
Visage -0.7919
Faceless Void -0.8151
Lifestealer -0.8221
Brewmaster -0.8526
Puck -0.8592
Tinker -0.9815
Anti-Mage -0.9886
Underlord -1.0448
Warlock -1.0650
Chen -1.1117
Keeper of the Light -1.1406
Invoker -1.1464
Tidehunter -1.1832
Abaddon -1.1877
Void Spirit -1.2193
Ember Spirit -1.2237
Lycan -1.2654
Dark Seer -1.2886
Wraith King -1.2905
Queen of Pain -1.3650
Phantom Lancer -1.4015
Mirana -1.4908
Zeus -1.6047
Spectre -2.3516
Naga Siren -2.3812
Medusa -3.2432