In problem 3.8, you computed mean and median income for 13 Canadian provinces and territories in two separate years. Now compute the standard deviation and range for each year, and taking account of the two measures of central tendency and the two measures of dispersion, write a paragraph summarizing the distributions. What do the measures of dispersion add to what you already knew about central tendency? Did the provinces become more or less variable over the period? The scores are reproduced here.

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Province or Territory Newfoundland and Labrador Prince Edward Island Nova Scotia New Brunswick Quebec Ontario Manitoba Saskatchewan Alberta British Columbia Yukon Northwest Territories Nunavut 2000 38,800 44,200 44,500 2006 50,500 56,100 56,400 7,700 59000 55,700 66,600 47,300 58,700 45,800 60,500 55,200 78,400 49,100 62,600 56,000 76,000 61,000 98,800 37,600 54,300