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This is South Africa's PowerBall (5 from 50 + 1 from 16). Looking for the US Powerball? 🇺🇸 US Powerball · 🇺🇸 Mega Millions

Analisi: osservato contro atteso

Each statistic on this page is shown next to the value you would expect if the draws were purely random. The expected values are calculated exactly (closed-form formulas over all 2,118,760 combinations), not simulated. The result in advance: everywhere, what we observe stays within the range of chance.

870 estrazioni · 19/06/2018 – 20/10/2026 · Exact expected values under the hypothesis of uniform 5-from-50 draws

How close together are the five numbers?

The linear span is the distance from the smallest to the largest number (end positions included). The circular span reads the numbers 1 to 50 on a circle where 50 touches 1: the draw 4, 5, 7, 48, 50 is then no longer spread over 47 positions but concentrated on 10. The bars show the distribution of draws by span, observed and expected.

Ampiezza lineare

Media: osservato 34,9, atteso 35,0

Osservato Atteso
5–9 3 / 1,2
10–14 9 / 10,2
15–19 31 / 32,3
20–24 75 / 68,3
25–29 107 / 113,3
30–34 162 / 157,8
35–39 189 / 186,7
40–44 177 / 180,2
45–49 112 / 112,9
50–50 5 / 7,1

Ampiezza circolare

Media: osservato 28,8, atteso 28,8

Osservato Atteso
5–9 3 / 1,4
10–14 12 / 13,2
15–19 41 / 48,1
20–24 130 / 119,0
25–29 235 / 237,1
30–34 317 / 323,5
35–39 131 / 127,1
40–41 1 / 0,5

Le estrazioni più compatte

A circular span of at most 10 has a probability of 0,30% for a random draw. We therefore expected 2,6 such draws; there were 4.

DataNumeri vincenticircolarelineare
01/12/20205678955
01/01/2019424446474877
27/08/2019459101188
17/04/202016192023251010
30/10/201819202427291111
08/11/202278910171111
07/10/202513182123241212
01/02/202231333740431313
11/09/2020141012491449
09/03/202128303637411414
28/05/202131333638441414
06/12/2022191047501450

Cosa si ripete dall'estrazione precedente?

For each draw, we count how many of its five numbers were already in the immediately preceding draw. The expected distribution is hypergeometric: 5 drawn from 50, of which 5 are marked.

Ripetizioni esatte

Media: osservato 0,483, atteso 0,500

Osservato Atteso
0 506 / 501,1
1 311 / 305,5
2 47 / 58,2
3 5 / 4,1
4–5 0 / 0,1

Vicini dell'estrazione precedente

Numero medio di numeri vincenti che sono vicini diretti (±1, in modo circolare) di un numero dell'estrazione precedente, senza esservi stati estratti.

0,877
Osservato
0,880
Atteso

L'ultima estrazione non contiene alcuna informazione sulla successiva. Rigiocare gli ultimi numeri o i loro vicini dà esattamente le stesse probabilità di qualsiasi altra combinazione.

La schedina come mappa di calore

The 50 numbers in rows of ten. The darker the cell, the more often the number was drawn. The expected value is the same for all; the differences are the normal spread of a binomial distribution.

Da sempre

870 estrazioni · Atteso: 87,0 / Numero · min 65, max 107

16528031014885916837758849921085
1178128113107147215106169417811895199620100
21902295237524105258126692783288429973079
31873288337734783587368337793810239894090
41914283439544794579468847854890491005088

Ultime 100 estrazioni

100 estrazioni · Atteso: 10,0 / Numero · min 5, max 16

192113948511677588911106
111212813151491511161517161891912209
2182210238241325122672711281229103010
3113328339348359367379381239154013
4194284313445458468471248949105013

The gap between the rarest and the most frequent number looks large, but it is exactly what you expect from 50 independent counts. Over the last 100 draws the relative spread is even larger because the sample is smaller.

Quanto resta assente un numero?

For each number we measure the gap in draws between two appearances. If the draws are independent, this gap follows a geometric distribution with probability 5/50 ≈ 10.0% per draw: mean 10.0, and long absences are not rare, they are the rule.

4300 intervalli misurati · Media: osservato 9,92, atteso 10,00

Osservato Atteso
1 420 / 430,0
2 407 / 387,0
3–4 685 / 661,8
5–7 768 / 764,6
8–10 535 / 557,4
11–15 626 / 614,0
16–20 329 / 362,6
21–30 355 / 340,5
31–40 114 / 118,7
41+ 61 / 63,6

The longest absence in the data is 82 draws. The probability that a given number stays absent that long is 0,02%; with 50 numbers it is bound to happen eventually. The longest current absence is 31 draws. A number that has been absent for a long time is therefore not "due": the balls have no memory.

La mia combinazione

Enter five numbers: has this combination been drawn before? Which draws came closest?

Everything runs in your browser; nothing is stored or sent. That a combination has never been drawn is normal: out of 2,118,760 possible combinations only a tiny fraction has ever come up.

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