The weekly salary of 5 employees was as follows:

$160.24, $183.56, $155.00, $274.50, $174.34

(a) Calculate the mean and median of the data. Which average may be more appropriate,

and why?

(b) Calculate the standard deviation of the data.

(c) Recalculate the mean and standard deviation if:

i. Each value is increased by $20.

ii. Each value is increased by 5%.