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Correlation
of values
+100%
In sync
of periods
96%
History
monthsmonths · through 2026-04
807
These move in the same direction about 96% of the time
When one swings, the other almost always swings by a closely matched amount (~100% of the pattern is shared).
Strong enough to use as a signal — check the stability and regime notes below before relying on it.
Both lines start at the same point — easy to compare when growth rates are similar.
Advanced
Statistics
In sync(i)
96.0%
Headline metric
Movement correlation(i)
+100%
Based on values
95% CI
+100% → +100%
Pipeline
Pipeline Summary
807 paired data points survived the monthly window.
Raw input
951
808
Normalized
951
808
Prepared
951
808
Aligned
807
807
Invalid removed
Likely range of correlation
R²(i)
99.7%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
807
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: -18 to 18 months.
Selected shift
No shift
Correlation at this shift
+100%
No shift — both series at their actual dates.
807 overlapping points at this shift
Baseline
+100%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+100%
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
+88%
16 periods · Return correlation when both series rose
Both Falling
N/A
2 periods · Return correlation when both series fell
Diverging
N/A
1 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
145
A: 144 / B: 1
Series A
US CPI
CPIAUCSL
FRED · 951 raw → 951 prepared
Series B
PCE Price Index
PCEPI
FRED · 808 raw → 808 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
0.3837
Linear regression slope.
Intercept
6.6298
Linear regression intercept.
Saved last month · ID: fred-cpiaucsl_fred-pcepi_monthly_5y