Canada 28 Frequency Analysis (JND28 / PC28) — multi-window comparison of 28 sum-value actual frequencies vs theoretical probability, supporting hot/cold identification and deviation analysis.
What is Frequency Analysis?
In short: "In the last N periods, how often did each sum-value appear? Hot or cold vs theoretical probability?"
This page does NOT predict the next draw; instead, it uses heatmap + multi-window comparison so you can see at a glance which of the 28 sum-values have "over-appeared" or "under-appeared" across different time windows.
Core metric: deviation (delta).
- delta > 0 = actual frequency higher than theoretical → hot (red)
- delta < 0 = actual frequency lower than theoretical → cold (blue)
- Larger absolute delta → deeper color
Where does the theoretical probability come from?
Canada 28 draws three 0-9 balls and sums them. There are 10³ = 1000 permutations. The theoretical probability of each sum is determined by how many permutations produce it:
Sum 0 = 0+0+0 = 1 way → 0.1%
Sum 1 = 0+0+1 perms = 3 ways → 0.3%
Sum 2 = 0+0+2 / 0+1+1 = 6 ways → 0.6%
...
Sum 13 = many combinations = 75 ways → 7.5% ← peak
Sum 14 = many combinations = 75 ways → 7.5% ← peak
...
Sum 26 = 8+9+9 perms = 3 ways → 0.3%
Sum 27 = 9+9+9 = 1 way → 0.1%
This is a bell-shaped distribution (high in the middle, low at the edges). With limited samples, actual frequency deviates from theoretical — frequency analysis observes this deviation.
Concrete example
Suppose you select "last 1000 periods" as the window. The system returns:
Sum 13: actually drawn 67 times (6.7%) vs theoretical 7.5% → delta -0.8% (cold)
Sum 14: actually drawn 88 times (8.8%) vs theoretical 7.5% → delta +1.3% (hot)
Sum 0: actually drawn 1 time (0.1%) vs theoretical 0.1% → delta 0 (aligned)
Meaning:
- Sum 13 was "slightly under-drawn" in the last 1000 periods; historically may catch up
- Sum 14 was "slightly over-drawn" in the last 1000 periods; may pull back
Expanding to multi-window comparison (100 / 500 / 2000 periods simultaneously), you can see whether a sum is short-term hot, long-term cold or short-term cold, long-term hot, supporting trend judgment.
How to read this page?
① Period checkboxes — pick multiple time windows for comparison
100 (ultra-short) / 200 / 402 (1 day) / 500 / 1000 / 2000 (long-term). Recommended: select at least 2-3 windows to spot patterns across time scales.
② "Load analysis" button — click to fetch data
Checking boxes won't auto-fetch; only the button triggers loading (avoids frequent requests).
③ Heatmap — one block per window
Each block lays out 28 sum-value cards (0-27) horizontally. Each card shows:
- Large text: actual percentage (e.g. 6.7%)
- Small text: theoretical % + actual count + delta
- Background: red (hot) / blue (cold) / gray (aligned)
- delta
④ Cross-window comparison — same sum's color across windows
E.g. sum 13 is red in the 100-period window but blue in the 2000-period window → short-term hot, long-term cold; the short-term heat may cool soon.
Glossary
- actualPct: within the window, the count of a sum / total periods
- theoreticalPct: the proportion of all 1000 permutations producing this sum (fixed)
- delta: actualPct - theoreticalPct; positive = hot, negative = cold
- Heatmap: visualizing deviation strength with color depth
- Multi-window comparison: viewing multiple time scales simultaneously to judge short/long-term trends
All data comes from official Canada 28 draw records, synchronized in real time. Note: statistics describe the past — they do not guarantee the future. Each draw is independent. Content is for research reference only and does not constitute betting advice.
Related Analysis Tools