Question

An article reported the following data on oxidation-induction time (min) for various commercial oils: 85    104   ...

An article reported the following data on oxidation-induction time (min) for various commercial oils:

85    104    130    160    180    195    135    145    215    105    145   
151    152    135    87    99    92    119    129  

a) Calculate the sample variance and standard deviation. (Round your answers to three decimal places.)

s2 = min2

s = min

(b) If the observations were reexpressed in hours, what would be the resulting values of the sample variance and sample standard deviation? Answer without actually performing the reexpression. (Round your answer to three decimal places.)

s2 = hr2

s = hr

Math   Statistics-And-Probability   
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