Sheet1OctDecMean15.811.15inferences :% improvement in mean
=29.43%SD79FOR OCTOBER, THE CALCULATIONS OF STANDARD DEVIATIONS ARE
AS FOLLOWSFOR DECEMBER, THE CALCULATIONS OF STANDARD DEVIATIONS ARE
AS FOLLOWSSI.NOXX barX-Xbar(X-Xbar)^2SI.NOXX
barX-Xbar(X-Xbar)^211215.84-3.8414.745612711.1515.85251.222522415.848.1666.58562711.15-4.1517.222531315.84-2.848.065631511.153.8514.82254715.84-8.8478.14564411.15-7.1551.122551615.840.160.025651811.156.8546.92256815.84-7.8461.46566611.15-5.1526.522572015.844.1617.305672311.1511.85140.422582515.849.1683.90568611.15-5.1526.522591415.84-1.843.38569211.15-9.1583.7225101015.84-5.8434.1056102411.1512.85165.1225111115.84-4.8423.425611211.15-9.1583.7225123015.8414.16200.505612611.15-5.1526.5225131615.840.160.025613511.15-6.1537.8225sum591.6928sum971.6925variance45.51483077variance74.74557692inferences:
spread of variation got increased from approximately 7 to 9 days.
Thus ultimately, there is no big reason to be
happySD6.746468022SD8.645552436
