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Correlation
of values
+82%
In sync
of periods
58%
History
monthsmonths · through 2026-04
429
These move in the same direction about 58% of the time
When one swings, the other often swings by a similar amount (~67% of the pattern is shared).
A faint pattern — interesting as colour, not strong enough to act on alone.
On a log scale so equal % moves take equal vertical space — best when one series has grown much faster than the other.
What to Watch
Holds in both up and down markets
The relationship is similar whether prices are rising or falling — reliable in both directions.
Advanced
Statistics
In sync(i)
58.0%
Headline metric
Movement correlation(i)
+82%
Based on values
95% CI
+78% → +84%
Likely range of correlation
Pipeline
Pipeline Summary
429 paired data points survived the monthly window.
Raw input
808
1,862
Normalized
808
1,862
Prepared
808
431
Aligned
429
429
Invalid removed
R²(i)
66.5%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
429
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
+82%
No shift — both series at their actual dates.
429 overlapping points at this shift
Baseline
+82%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
+82%
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
+72%
43 periods · Return correlation when both series rose
Both Falling
+85%
9 periods · Return correlation when both series fell
Diverging
+2%
47 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
381
A: 379 / B: 2
Series A
PCE Price Index
PCEPI
FRED · 808 raw → 808 prepared
Series B
US Gas Price
GASREGW
FRED · 1,862 raw → 431 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
3
Estimated crossover points between normalized spreads.
Slope
0.0426
Linear regression slope.
Intercept
-1.5151
Linear regression intercept.
Saved last month · ID: fred-gasregw_fred-pcepi_monthly_5y