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Correlation
of values
+83%
In sync
of periods
41%
History
monthsmonths · through 2026-05
244
These move in the same direction about 41% of the time
When one swings, the other almost always swings by a closely matched amount (~69% 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.
Tighter in drawdowns
The relationship is stronger when both prices are falling than when both are rising — typical risk-off behaviour.
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)
41%
Headline metric
Movement correlation(i)
+83%
Based on values
95% CI
N/A
Likely range
Pipeline
Pipeline Summary
244 paired data points survived the monthly window.
Raw input
952
5,139
Normalized
952
5,139
Prepared
952
247
Aligned
244
244
Invalid removed
69%
Variance explained
Significance
N/A
Statistical confidence
Data points(i)
244
Usable
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
+83%
No shift — both series at their actual dates.
244 overlapping points at this shift
Baseline
+83%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+83%
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
+7%
90 periods · Return correlation when both series rose
Both Falling
+31%
10 periods · Return correlation when both series fell
Diverging
-65%
142 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
711
A: 708 / B: 3
Series A
US CPI
CPIAUCSL
FRED · 952 raw → 952 prepared
Series B
US Dollar Index
DTWEXBGS
FRED · 5,139 raw → 247 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
5
Estimated crossover points between normalized spreads.
Slope
0.2822
Linear regression slope.
Intercept
35.7036
Linear regression intercept.
Saved 3 months ago · ID: fred-cpiaucsl_fred-dtwexbgs_monthly_5y