# DSC 441 HW2.docx - Problem1 a(2 points Draw the box-plots...

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Problem1:a.(2 points) Draw the box-plots for age and %fat. Interpret the distribution of the data.
From the boxplot of age we can conclude that the distribution is skewed to the left. b.(2 points) Normalize the two attributes based on z-score normalization.We can calculate Z-score normalization by using the following formula:V= v-meam/ stdAs we can see in the descriptive statistics the mean for the age is 50.11 and standard deviation is14.89. and for fat, the mean is 31.06 and the standard deviation is 9.53. by using SPSS the z-score is as follow:c. (2 points) Regardless of the original ranges of the variables, normalization techniques transform the data into new ranges that allow to compare and use variables on the same scales. What are the values ranges of the following normalization methods (for this data set and in general)? Explain your answer.