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Given the following data 3, 5, 6, 6, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 10, 11, 13, 15, 44 Hand
Given the following data
3, 5, 6, 6, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 10, 11, 13, 15, 44
- Hand calculate the mean, median, Q1, Q3, IQR, variance and standard deviation (You can use the R calculator or any other calculator).
- Using the Q3 + 1.5 IQR and Q1 1.5IQR, decide whether there are any outliers in the data.
- Delete the outliers and recalculate the mean, median, Q1, Q3 and IQR. Comment on how the results changed and why.
- Save the given data as a .csv file and use R commands to calculate mean, median, Q1, Q3, IQR, variance and standard deviation for the data set with and without the outlier and compare the results.
- Using R, add five to all of the given data (N = 20) and see how the mean, median, variance, and standard deviation change. Report the results.
Let us say we use X to display. We call the new variable W. The R command would be
W = X + 5
- Using R, multiply all of the given data (N = 20) by 10 and see how the mean, median, variance, and standard deviation change. Report the results.
Let us say we call the new variable Z, the R command would be
Y = X*5
- Using R, divide all of the given data (N = 20) by 10 and see how the mean, median, variance, and standard deviation change. Report the results.
Let us say we call the new variable W, the R command would be
Z = X/10
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