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Correlation
of values
+63%
In sync
of periods
49%
History
weeksweeks · through 2026-20
1,859
These move in the same direction about 49% of the time
Their swing sizes loosely line up (~39% of the pattern is shared).
Roughly random — these don't track each other in a meaningful way.
Both lines start at the same point — easy to compare when growth rates are similar.
What to Watch
Slipping looser
The recent pattern is looser than its long-run baseline — keep an eye on whether this sticks.
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
Flips between sync and inverse
Sometimes the two move together, sometimes opposite. Don't treat this as a stable signal.
Advanced
Statistics
In sync(i)
49.3%
Headline metric
Movement correlation(i)
+63%
Based on values
95% CI
+60% → +65%
Likely range of correlation
Pipeline
Pipeline Summary
1,859 paired data points survived the weekly window.
Raw input
1,860
11,628
Normalized
1,860
11,628
Prepared
1,860
2,420
Aligned
1,859
1,859
Invalid removed
R²(i)
39.4%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
1,859
Deep
Time-Shifted Correlation
See how correlation changes when one series is offset in time. A taller bar at a non-zero shift means the two move together better when one leads the other — that's a potential lead/lag signal.
Correlation by shift
Click a bar to inspect. Range: -12 to 12 weeks.
Selected shift
No shift
Correlation at this shift
+63%
No shift — both series at their actual dates.
1,859 overlapping points at this shift
Baseline
+63%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+63%
A non-zero peak suggests one series lines up better when shifted against the other.
Stability
How the correlation evolves over time. A stable line means the relationship is reliable; large swings signal regime-dependent behavior.
Do They Crash Together?
How these series behave when markets are rising, falling, or diverging. A correlation that holds in drawdowns is very different from one that only works in rallies.
Both Rising
+18%
74 periods · Return correlation when both series rose
Both Falling
+10%
60 periods · Return correlation when both series fell
Diverging
-54%
115 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
562
A: 1 / B: 561
Series A
US Gas Price
GASREGW
FRED · 1,860 raw → 1,860 prepared
Series B
USD/ZAR Exchange Rate
DEXSFUS
FRED · 11,628 raw → 2,420 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
11
Estimated crossover points between normalized spreads.
Slope
3.1559
Linear regression slope.
Intercept
2.2364
Linear regression intercept.
Saved 2 weeks ago · ID: fred-dexsfus_fred-gasregw_weekly_5y