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1. Compute the range, interquartile range, variance, and standard deviation of the following 10 scores. Please show your calculations 10,12,15, 20, 25, 30, 32,35, 40, 50 2. The table below shows the price of a liter of gas for 20 nations. Calculate the mean, median, range, interquartile range, and standard deviation for this variable Cost of Gas/L S Dollars) in ation United States Nigeria Australia Mexico Canada Argentina South Africa Ukraine China Colombia India Kenya Spain Brazil Sweden United Kingdom Germany Ireland Italy Japan 0.56 0.59 0.74 0.74 0.76 0.78 0.87 0.88 0.99 1.09 1.20 1.23 1.26 1.38 1.44 1.56 1.56 1.57 1.74 3. In your own words, explain a) what a distribution is, and b) what a normal distribution is and why it is used so frequently in statistics.
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