Question

An article in an archaeological science journal described 26 samples of pottery found at four different kiln sites in a certain country. The percentage of iron oxide in each of five samples collected at one particular site was as follows.

1.35    2.60    1.57    2.13    1.62

(a)

Calculate the range.

(b)

Calculate the sample variance and the standard deviation using the computing formula. (Round your answers to four decimal places.)

s²

=

s

=

(c)

Compare the range and the standard deviation. The range is approximately how many standard deviations? (Round your answer to one decimal place.)

The range is approximately standard deviations.

Answer 1