There is no correlation between Duration and Pick Rate. Some has higher Duration, some has higher Pick Rate. Objects are grouped into clusters (marked with different colors) based on close values of Duration and Pick Rate.
Duration Pick Rate
Abaddon 2369 0.0588
Alchemist 2379 0.0845
Ancient Apparition 2535 0.0860
Arc Warden 2444 0.0530
Bane 2433 0.0278
Batrider 2394 0.0280
Brewmaster 2388 0.0102
Centaur Warrunner 2447 0.0441
Chaos Knight 2400 0.0535
Clockwerk 2456 0.0360
Dark Seer 2447 0.0306
Dark Willow 2486 0.0487
Dawnbreaker 2398 0.0422
Dazzle 2398 0.0754
Death Prophet 2430 0.0235
Disruptor 2435 0.0932
Doom 2433 0.0679
Dragon Knight 2441 0.0414
Earth Spirit 2390 0.0298
Elder Titan 2493 0.0151
Ember Spirit 2429 0.0903
Enchantress 2447 0.0494
Enigma 2464 0.0278
Grimstroke 2448 0.0512
Gyrocopter 2462 0.0464
Hoodwink 2482 0.0745
Huskar 2370 0.0607
Keeper of the Light 2433 0.0414
Kunkka 2481 0.0460
Leshrac 2436 0.0134
Lifestealer 2405 0.0632
Lina 2469 0.0373
Luna 2402 0.0385
Marci 2371 0.0417
Mars 2429 0.0370
Morphling 2363 0.0377
Muerta 2477 0.0633
Naga Siren 2398 0.0390
Nature's Prophet 2435 0.0300
Night Stalker 2416 0.0324
Omniknight 2363 0.0758
Oracle 2360 0.0691
Outworld Destroyer 2434 0.0645
Pangolier 2448 0.0623
Phoenix 2442 0.0306
Primal Beast 2437 0.0286
Puck 2430 0.0464
Pugna 2414 0.0718
Razor 2486 0.0264
Sand King 2491 0.0665
Shadow Demon 2470 0.0182
Slardar 2438 0.0592
Snapfire 2435 0.0650
Spectre 2534 0.0739
Storm Spirit 2444 0.0840
Sven 2434 0.0657
Templar Assassin 2385 0.0382
Terrorblade 2410 0.0361
Tidehunter 2437 0.0453
Timbersaw 2428 0.0659
Tiny 2427 0.0439
Treant Protector 2423 0.0345
Troll Warlord 2420 0.0433
Tusk 2410 0.0529
Underlord 2420 0.0741
Ursa 2440 0.0856
Vengeful Spirit 2399 0.0549
Viper 2514 0.0682
Warlock 2442 0.0526
Weaver 2480 0.0549
Winter Wyvern 2465 0.0478
Wraith King 2419 0.0743
Zeus 2526 0.0954
Duration Pick Rate
Anti-Mage 2423 0.1400
Axe 2480 0.1799
Bloodseeker 2474 0.0916
Bounty Hunter 2387 0.1337
Bristleback 2476 0.1029
Clinkz 2393 0.1194
Crystal Maiden 2436 0.1651
Drow Ranger 2493 0.1203
Earthshaker 2485 0.1030
Faceless Void 2477 0.1041
Invoker 2468 0.1081
Jakiro 2459 0.1185
Juggernaut 2395 0.1744
Legion Commander 2396 0.2243
Lich 2461 0.1130
Lion 2467 0.1659
Magnus 2390 0.1240
Medusa 2484 0.1632
Mirana 2441 0.1226
Monkey King 2409 0.1156
Necrophos 2419 0.1097
Nyx Assassin 2461 0.1410
Ogre Magi 2436 0.1648
Phantom Assassin 2423 0.1508
Phantom Lancer 2435 0.1171
Pudge 2427 0.2842
Queen of Pain 2458 0.1130
Riki 2471 0.1068
Rubick 2461 0.1631
Shadow Fiend 2388 0.1425
Shadow Shaman 2443 0.1100
Silencer 2464 0.1635
Skywrath Mage 2454 0.1344
Slark 2408 0.1967
Sniper 2525 0.1716
Spirit Breaker 2422 0.1699
Techies 2489 0.1558
Tinker 2464 0.0811
Undying 2417 0.1107
Venomancer 2457 0.1262
Void Spirit 2395 0.1296
Windranger 2466 0.1959
Witch Doctor 2466 0.1785
Duration Pick Rate
Beastmaster 2328 0.0262
Broodmother 2270 0.0070
Chen 2275 0.0093
Io 2279 0.0379
Lone Druid 2270 0.0164
Lycan 2304 0.0084
Meepo 2263 0.0291
Visage 2309 0.0123