๐ŸŽ‚ Birthday Paradox ยท Sports
โ† All sports

Olympic Bobsleigh (Bobsleigh)

Delegation

264 team lists ยท 2,184 player entries ยท avg team size 8.3

Read this sport as a comparison between raw coincidence and what team size alone predicts. Here, the real rate is +1.1 points above the birthday-paradox baseline.

Real team lists
9.8%
teams with shared birthdays
Why it matters: This is the headline rate, but it should never be read without team size.
Expected from size
8.8%
from avg team size
Why it matters: This is the fair baseline: what same-size random teams would do.
Gap from expected
+1.1 points
real โˆ’ expected
Why it matters: Positive means the sport has more birthday matches than size alone predicts.
Team lists
264
teams analysed
Why it matters: Enough team lists for a useful sport-level read.
What to notice: The best question on a sport page is not "is the real rate high?" but "is it high after accounting for team size?" That is what the gap card is answering.

Country comparison

Countries with the most team lists for Olympic Bobsleigh (Bobsleigh), charted by the share of teams with at least one shared birthday.

What to compare: This view is best for spotting sample-shape differences inside a sport. Among the highest-sample countries, CAN has the highest observed rate, with an average team size of 10.4.

Gender split inside this sport

Real and expected rates for labelled team lists in this sport.

Why it matters: The gender gap is mostly a team-size story. Women have the larger average team size here (10.3 athletes), so their birthday-match rate naturally rises.

By country

Top 40 countries by team-list count.

CountryTeam listsAvg playersReal
USA2111.214.3%
SUI218.84.8%
GBR208.610.0%
AUT198.60.0%
ITA188.80.0%
ROU186.511.1%
FRA176.917.6%
CAN1510.433.3%
GER1511.933.3%
LAT97.011.1%
FRG68.70.0%
RUS610.516.7%
JPN56.60.0%
CZE56.60.0%
NED56.40.0%
BEL46.30.0%
ISV46.50.0%
SWE47.50.0%
GDR48.50.0%
NOR37.30.0%
KOR38.00.0%
JAM35.30.0%
AUS36.00.0%
YUG27.00.0%
PUR25.00.0%
CHN28.550.0%
BUL25.00.0%
ARG26.50.0%
BIH25.00.0%
CRO25.00.0%
TPE25.00.0%
URS29.00.0%
ROC210.50.0%
MON25.00.0%
MEX26.050.0%
POL27.00.0%
BRA16.00.0%
ESP19.0100.0%
EUN18.00.0%
LUX15.00.0%
What to notice: Countries with larger average teams will naturally show more shared birthdays. The country list is most useful for finding which samples are driving this sport's overall rate.

By gender

Where the dataset records it.

GenderTeam listsRealExpectedGap
Women2020.0%13.5%+6.5 points
Men2449.0%8.4%+0.7 points

Sample team lists

Largest teams in the dataset.

TeamSeasonPlayersRepeatsExpected chance
GER Bobsleigh (Bobsleigh) (2010 Winter) ยท GER2010 Winter18134.7%
GER Bobsleigh (Bobsleigh) (2018 Winter) ยท GER2018 Winter18134.7%
CAN Bobsleigh (Bobsleigh) (2018 Winter) ยท CAN2018 Winter18134.7%
GER Bobsleigh (Bobsleigh) (2014 Winter) ยท GER2014 Winter17131.5%
RUS Bobsleigh (Bobsleigh) (2014 Winter) ยท RUS2014 Winter16128.4%
USA Bobsleigh (Bobsleigh) (2018 Winter) ยท USA2018 Winter16128.4%
GBR Bobsleigh (Bobsleigh) (2002 Winter) ยท GBR2002 Winter14122.3%
GER Bobsleigh (Bobsleigh) (2006 Winter) ยท GER2006 Winter14122.3%
GER Bobsleigh (Bobsleigh) (2002 Winter) ยท GER2002 Winter13119.4%
USA Bobsleigh (Bobsleigh) (2002 Winter) ยท USA2002 Winter13219.4%
What to notice: The sample team lists show the mechanics: once the player count gets large, the expected chance climbs quickly, and each repeat is another player landing on a date already present.