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Correlation
of values
+100%
In sync
of periods
95%
History
weeksweeks · through 2026-27
1,819
These move in the same direction about 95% of the time
When one swings, the other almost always swings by a closely matched amount (~99% 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)
95%
Headline metric
Movement correlation(i)
+100%
Based on values
95% CI
N/A
Pipeline
Pipeline Summary
1,819 paired data points survived the weekly window.
Raw input
2,884
1,819
Normalized
2,884
1,819
Prepared
2,884
1,819
Aligned
1,819
1,819
Invalid removed
Likely range
R²(i)
99%
Variance explained
Significance
N/A
Statistical confidence
Data points(i)
1,819
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
+100%
No shift — both series at their actual dates.
1,819 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.
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
1,065
A: 1065 / B: 0
Series A
30Y Mortgage Rate
MORTGAGE30US
FRED · 2,884 raw → 2,884 prepared
Series B
15Y Mortgage Rate
MORTGAGE15US
FRED · 1,819 raw → 1,819 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
47
Estimated crossover points between normalized spreads.
Slope
1.0537
Linear regression slope.
Intercept
-0.8877
Linear regression intercept.
Saved 3 months ago · ID: fred-mortgage15us_fred-mortgage30us_weekly_5y