/guava/android/guava/src/com/google/common/math/PairedStats.java
} return sumOfProductsOfDeltas / count( ) ;checkState( count( ) != 0) ;
checkState ( count ( ) != 0 ) ; return sumOfProductsOfDeltas / count ( ) ; }
return xStats; } public Stats yStats() { return yStats; } public double populationCovariance() { <extra_id_0> public double sampleCovariance() { checkState(count() > 1); return sumOfProductsOfDeltas / (count() - 1); } public double pearsonsCorrelationCoefficient() { checkState(count() > 1);