The nine measurements that follow are furnace temperatures recorded on successive batches in a semiconductor manufacturing process (units are ): 953, 950, 948, 955, 951, 949, 957, 954, 955.
(a) Calculate the sample mean, sample variance, and standard deviation.
(b) Find the median. How much could the largest temperature measurement increase without changing the median value?
(c) Construct a box plot of the data.