Please find the range, sample standard deviation and inter-quartile range (IQR) of the following data set. 22 31 38 18 51 in 15 in 1 5 7 range 156 x|(Please enter an exact answer.) standard deviation ($) = 156 (Please show your answer to one decimal place. ) IOR = Please enter an exact answer. ) A new number, 178, is added to the data set above. Please find the new range, sample standard deviation and IQR of the new data set. range = 156 (Please enter an exact answer.) O X 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? O standard deviation OIQR O Range