Question: Please find the range, sample standard deviation and inter-quartile range (IQR) of the following data set. 21 23 24 25 29 47 54 72 72

Please find the range, sample standard deviation and inter-quartile range (IQR) of the following data set.

21 23 24 25 29 47 54 72 72 76

range =(Please enter an exact answer.)standard deviation (s

s

) =(Please show your answer to one decimal place.)IQR =(Please enter an exact answer.)

A new number, 177, is added to the data set above. Please find the new range, sample standard deviation and IQR of the new data set.

range =(Please enter an exact answer.)standard deviation =(Please show your answer to one decimal place.)IQR =(Please enter an exact answer.)

Which measure of spread is less affected by the addition of the extreme observation?

  • standard deviation
  • IQR
  • Range

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