ks splay for the birth weight of 50 newbom babies in a hospital is given below:

Question

ks splay for the birth weight of 50 newbom babies in a hospital is given below: Stem Leaf leaf unit-O.1) 1 4 4 01134 5 01 1237 6 045 7889 7 01122334 45678 8 01 1 2233 9 1344 78 10 09 Find the range, median. Qi. Qs and interquartile range. What is the approximate value of the stand deviation? Do the data refer to a population or a sample? b) The following data represent the number of small cracks per bar for a sample of 7 steel bars: 6.7. 1, 3, 2.30, 10. Determine whether 30 is an outlier.(Show your work)

Explanation / Answer

a) Minimum          = 20 maximum         = 117 Range                = Maximum - Minimum    = 97 Quartile 1         = Q1 54 Quartile 2         = Q2 72 Quartile 3        = Q3 81.75 Interquartile range = Q3 - Q1 27.75 Standard deviation = 20.62888801 This data referes to as a polulation because total observarions are more than 30 b) 6 7 Quartile 1         = Q1 2.5 1 Quartile 2         = Q2 6 3 Quartile 3        = Q3 8.5 2 30 lower bound for outliers = Q1 - 1.5*Q3 -10.25 10 lower bound for outliers = Q1 + 1.5*Q3 15.25 If observation is ouside the lower bound and upper bound it is called as outliers. Therefore observation 30 is outlier for given data set

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