The average hero

Currently there are 113 heroes in Dota2.

The attributes that define a hero aside from their skills/talents are :

Strength(STR)

Strength Gain(STR+)

Strength at Level 25(STR 25)

Agility(AGI)

Agility Gain(AGI+)

Agility at level 25(AGI 25)

Intelligence (INT)

Intelligence Gain(INT+)

Intelligence at level 25(INT 25)

Total Stats(T)

Total Stats Gain(T+)

Total Stats on level 25(T25)

Movement Speed(MS)

Armor(AR)

Minimum Damage(DMG MIN)

Maximum Damage(DMG MAX)

Range(RG)

Base Attack Time(BAT)

Attack Point (ATK PT)

Attack Backswing(ATK BS)

Vision at Day(VS-D)

Vision at Night(VS-N)

Turn Rate(TR)

Collision Size(COL)

HP regeneration per second (HP/S)

To determine the most average hero I computed for the mean of each attribute.

Then took the absolute deviation of each hero per statistic.

These absolute deviations were then added up to determine which hero is nearest to the average of each statistic.

The average hero has:

STR	STR+	STR 25	AGI	AGI+	AGI 25	INT	INT+	INT 25	T	T+	T25	MS
20.1	2.48	79.56	17.92	1.96	64.9	19.45	2.16	71.22	57.47	6.59	215.68	299.91
AR	DMG MIN	DMG MAX	RG	BAT	ATK PT	ATK BS	VS-D	VS-N	TR	COL	HP/S
2.71	47.92	55.81	348.5	1.69	0.42	0.56	1789.38	822.12	0.57	23.43	0.22

Based on my computation Brood is the most average hero of Dota2 with attributes:

STR	STR+	STR 25	AGI	AGI+	AGI 25	INT	INT+	INT 25	T	T+	T25	MS
17	2.8	84.2	18	2.2	70.8	18	2	66	53	7	221	295
AR	DMG MIN	DMG MAX	RG	BAT	ATK PT	ATK BS	VS-D	VS-N	TR	COL	HP/S
2.57	44	50	150	1.7	0.4	0.5	1800	800	0.5	24	0

data source: https://dota2.gamepedia.com/Table_of_hero_attributes