ESS210B
Prof. Jin-Yi Yu
Significance Test of the Difference of Means
qWe want to compare the averages from two independent samples to determine whether a significance exists between the samples.
q
qFor Example:
q     * One sample contains the cholesterol data on patients taking a standard drug, while the second sample contains cholesterol data on patients taking experimental drug. You would test to see whether there is statistically significant difference between two sample averages.
q
q     * Compare the average July temperature at a location produced in a climate model under a doubling versus no doubling CO2 concentration.
q
q     * Compare the average winter 500-mb height when one or the other of two synoptic weather regimes had prevailed.