The correlation between Cost and kda is 0.79. The more Cost, the more kda, and vice versa. But some values are higher than expected, some are lower. Efficiency is a difference between the value of kda depending on Cost (blue dots) with respect to the expected value (red line).
| Efficiency | |
|---|---|
| Boots Of Travel 2 | 0.7414 |
| Bottle | 0.6722 |
| Eye Of Skadi | 0.6288 |
| Boots Of Travel | 0.6026 |
| Disperser | 0.5799 |
| Nullifier | 0.5523 |
| Butterfly | 0.5460 |
| Swift Blink | 0.5216 |
| Phylactery | 0.5125 |
| Arcane Blink | 0.4916 |
| Kaya And Sange | 0.4851 |
| Octarine Core | 0.4652 |
| Revenant'S Brooch | 0.4514 |
| Shiva'S Guard | 0.4293 |
| Aghanim'S Shard | 0.3898 |
| Linken'S Sphere | 0.3852 |
| Power Treads | 0.3698 |
| Yasha And Kaya | 0.3451 |
| Satanic | 0.3160 |
| Moon Shard | 0.3108 |
| Manta Style | 0.2952 |
| Orb Of Corrosion | 0.2868 |
| Holy Locket | 0.2765 |
| Refresher Orb | 0.2694 |
| Soul Ring | 0.2624 |
| Diffusal Blade | 0.2526 |
| Falcon Blade | 0.2421 |
| Harpoon | 0.2314 |
| Witch Blade | 0.2286 |
| Phase Boots | 0.2070 |
| Abyssal Blade | 0.2063 |
| Wraith Band | 0.1894 |
| Skull Basher | 0.1719 |
| Radiance | 0.1560 |
| Magic Wand | 0.1514 |
| Daedalus | 0.1392 |
| Assault Cuirass | 0.1359 |
| Veil Of Discord | 0.1212 |
| Heart Of Tarrasque | 0.1194 |
| Bracer | 0.1094 |
| Meteor Hammer | 0.1065 |
| Monkey King Bar | 0.0860 |
| Desolator | 0.0774 |
| Scythe Of Vyse | 0.0610 |
| Null Talisman | 0.0594 |
| Hurricane Pike | 0.0545 |
| Sange And Yasha | 0.0451 |
| Pavise | 0.0198 |
| Mjollnir | -0.0154 |
| Ethereal Blade | -0.0179 |
| Aghanim'S Scepter | -0.0206 |
| Spirit Vessel | -0.0337 |
| Overwhelming Blink | -0.0384 |
| Vladmir'S Offering | -0.0454 |
| Hand Of Midas | -0.0660 |
| Blink Dagger | -0.0678 |
| Solar Crest | -0.0694 |
| Blade Mail | -0.0724 |
| Mask Of Madness | -0.0764 |
| Boots Of Bearing | -0.0800 |
| Mage Slayer | -0.0874 |
| Bloodstone | -0.0925 |
| Wind Waker | -0.1056 |
| Black King Bar | -0.1120 |
| Eternal Shroud | -0.1132 |
| Aether Lens | -0.1137 |
| Arcane Boots | -0.1275 |
| Lotus Orb | -0.1610 |
| Pipe Of Insight | -0.1613 |
| Battle Fury | -0.1726 |
| Drum Of Endurance | -0.1790 |
| Bloodthorn | -0.1830 |
| Eul'S Scepter Of Divinity | -0.1916 |
| Aeon Disk | -0.1986 |
| Tranquil Boots | -0.2032 |
| Crimson Guard | -0.2192 |
| Dragon Lance | -0.2355 |
| Echo Sabre | -0.2374 |
| Armlet Of Mordiggian | -0.2414 |
| Heaven'S Halberd | -0.2551 |
| Rod Of Atos | -0.2577 |
| Force Staff | -0.2660 |
| Crystalys | -0.2672 |
| Orchid Malevolence | -0.2763 |
| Glimmer Cape | -0.2841 |
| Urn Of Shadows | -0.3132 |
| Guardian Greaves | -0.3140 |
| Aghanim'S Blessing | -0.3175 |
| Mekansm | -0.3264 |
| Vanguard | -0.3390 |
| Silver Edge | -0.3412 |
| Gleipnir | -0.3446 |
| Medallion Of Courage | -0.4755 |
| Dagon | -0.5020 |
| Maelstrom | -0.5056 |
| Helm Of The Dominator | -0.6075 |
| Shadow Blade | -0.6586 |
| Helm Of The Overlord | -0.6848 |
| Dagon (2) | -0.6892 |
| Dagon (5) | -0.7668 |
| Dagon (3) | -0.8408 |
| Dagon (4) | -0.9866 |