Atlantic Canada recently voted in a federal election. One of the options for voting in this election was through the mail. To do this you must have registered with Elections Canada and provided some form of I.D. with your current address on it. The following data shows the number of people who registered to "Vote by Mail" in a sample of 15 federal election ridings in Atlantic Canada (hypothetical data).

38	16	69	101	69	70
109	121	49	45	1909	151
68	90	91

Calculate by showing workings:

a)i) mean

ii) median

iii) mode

iv) Which of the above would be the best measure of central tendency for this data and why.

b) Calculate the range, variance and the standard deviation.

c) Calculate the 58th percentile & the 3rd decile of this data.

d.)Using Megastat's Descriptive Statistics, find (confirm) the mean, median, mode, range, variance and the standard deviation of the above data.