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Correlation
of values
-42%
In sync
of periods
49%
History
monthsmonths · through 2026-03
663
These move in the same direction about 49% of the time
Their swing sizes loosely mirror each other (~18% 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.
Advanced
Statistics
In sync(i)
48.8%
Headline metric
Movement correlation(i)
-42%
Based on values
95% CI
-49% → -36%
Likely range of correlation
Pipeline
Pipeline Summary
663 paired data points survived the monthly window.
Raw input
807
13,869
Normalized
807
13,869
Prepared
807
665
Aligned
663
663
Invalid removed
R²(i)
18.0%
Variance explained
Significance
p < 0.001
Statistical confidence
Data points
663
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
-42%
No shift — both series at their actual dates.
663 overlapping points at this shift
Baseline
-42%
No-shift correlation, matching the main time-series chart above.
Peak shift
No shift
-42%
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
-29%
15 periods · Return correlation when both series rose
Both Falling
-34%
9 periods · Return correlation when both series fell
Diverging
-23%
23 periods · Return correlation when series moved apart
Scatter
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
146
A: 144 / B: 2
Series A
Real Disposable Income
DSPIC96
FRED · 807 raw → 807 prepared
Series B
NZD/USD Exchange Rate
DEXUSNZ
FRED · 13,869 raw → 665 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
1
Estimated crossover points between normalized spreads.
Slope
-0.0000
Linear regression slope.
Intercept
0.9507
Linear regression intercept.
Saved 2 weeks ago · ID: fred-dexusnz_fred-dspic96_monthly_5y