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

25

35

42

48

58

67

67

77

97

98

range = (Please enter an exact answer.) standard deviation (ss) = (Please show your answer to one decimal place.) IQR = (Please enter an exact answer.) A new number, 123, 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?

• Range
• standard deviation
• IQR