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Correlation
of values
+49%
In sync
of periods
55%
History
monthsmonths · through 2026-03
543
These move in the same direction about 55% of the time
Their swing sizes loosely line up (~24% 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
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)
54.8%
Headline metric
Movement correlation(i)
+49%
Based on values
95% CI
+43% → +55%
Likely range of correlation
Pipeline
Pipeline Summary
543 paired data points survived the monthly window.
Raw input
603
11,375
Normalized
603
11,375
Prepared
603
545
Aligned
543
543
Invalid removed
R²(i)
24.2%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
543
Robust
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: -18 to 18 months.
Selected shift
No shift
Correlation at this shift
+49%
No shift — both series at their actual dates.
543 overlapping points at this shift
Baseline
+49%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+49%
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
+19%
71 periods · Return correlation when both series rose
Both Falling
-11%
57 periods · Return correlation when both series fell
Diverging
-41%
121 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
62
A: 60 / B: 2
Series A
Total Vehicle Sales
TOTALSA
FRED · 603 raw → 603 prepared
Series B
USD/HKD Exchange Rate
DEXHKUS
FRED · 11,375 raw → 545 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
61
Estimated crossover points between normalized spreads.
Slope
0.0936
Linear regression slope.
Intercept
6.2445
Linear regression intercept.
Saved 2 days ago · ID: fred-dexhkus_fred-totalsa_monthly_5y