Question

2000: Mean= 6549/10 = 654.9 standard deviation= √(observation-mean) ^2/N-1 = √16697/9 = 43.07 2005: Mean = 7030/10 = 703 standard deviation= √(observation-mean) ^2/N-1 = √ 8435/9 = 30.61 knowing this SD for each year did the average weekly earnings for the provinces become more or less variable over the period

Answer 1

Result:

2000: Mean= 6549/10 = 654.9 standard deviation= √(observation-mean) ^2/N-1 = √16697/9 = 43.07

2005: Mean = 7030/10 = 703 standard deviation= √(observation-mean) ^2/N-1 = √ 8435/9 = 30.61

knowing this SD for each year did the average weekly earnings for the provinces become more or less variable over the period

coefficient of variation for 2000   = sd*100/mean = 43.07*100/654.9 = 6.576577

coefficient of variation for 2005 = 30.61*100/703 = 4.354196

By comparing the coefficient of variation for the two years, average weekly earnings for the provinces become less variable over the period.