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

Olympic Nordic Combined (Skiing)

Delegation

38 team lists ยท 193 player entries ยท avg team size 5.1

Read this sport as a comparison between raw coincidence and what team size alone predicts. Here, the real rate is +5.1 points above the birthday-paradox baseline.

Real team lists
7.9%
teams with shared birthdays
Why it matters: This is the headline rate, but it should never be read without team size.
Expected from size
2.8%
from avg team size
Why it matters: This is the fair baseline: what same-size random teams would do.
Gap from expected
+5.1 points
real โˆ’ expected
Why it matters: Positive means the sport has more birthday matches than size alone predicts.
Team lists
38
teams analysed
Why it matters: Small sample: treat the rate as a lead, not a verdict.
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 Nordic Combined (Skiing), 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, JPN has the highest observed rate, with an average team size of 5.0.

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. Men have the larger average team size here (5.1 athletes), so their birthday-match rate naturally rises.

By country

Top 40 countries by team-list count.

CountryTeam listsAvg playersReal
JPN65.016.7%
GER65.216.7%
AUT55.00.0%
NOR55.00.0%
CZE35.00.0%
USA35.333.3%
RUS25.00.0%
FIN25.00.0%
SUI25.50.0%
ITA25.00.0%
CAN15.00.0%
FRA15.00.0%
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
Men387.9%2.8%+5.1 points

Sample team lists

Largest teams in the dataset.

TeamSeasonPlayersRepeatsExpected chance
USA Nordic Combined (Skiing) (2006 Winter) ยท USA2006 Winter614.0%
GER Nordic Combined (Skiing) (1998 Winter) ยท GER1998 Winter512.7%
JPN Nordic Combined (Skiing) (1998 Winter) ยท JPN1998 Winter512.7%
GER Nordic Combined (Skiing) (2002 Winter) ยท GER2002 Winter604.0%
SUI Nordic Combined (Skiing) (2002 Winter) ยท SUI2002 Winter604.0%
CAN Nordic Combined (Skiing) (1932 Winter) ยท CAN1932 Winter502.7%
AUT Nordic Combined (Skiing) (2002 Winter) ยท AUT2002 Winter502.7%
AUT Nordic Combined (Skiing) (2010 Winter) ยท AUT2010 Winter502.7%
CZE Nordic Combined (Skiing) (1998 Winter) ยท CZE1998 Winter502.7%
CZE Nordic Combined (Skiing) (2002 Winter) ยท CZE2002 Winter502.7%
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.