a. Arithmetic mean
d. Weighted mean
II. Use the following scenario presented below to answer questions 1 to 2: January rainfall (mm) was recorded at four weather stations along a coastline for several years. The Mean and sample size for each sample are summarized below. Sample 1: n=5 and x'=53.8; Sample 2: n=5 and x'=47.4; Sample 3: n=5 and x'=52.2; Sample 4: n=4 and x'=43.8
1. Calculate the overall mean for the 4 samples.
2. Which inferential test would you use to determine if there is a difference in rainfall between the sample 2 and 3? (Note: based on previous experience, you can assume that the rainfall data have normal distributions.)
The answer to your fiest question is this:
I. c (because the value 28.2 is an outlier which ...
By responding to the questions, this solution provides assistance in calculating overall mean and inferential tests.