Flexural strength is a measure of a material's ability to resist failure in bending. The accompanying data are on flexur

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Flexural Strength Is A Measure Of A Material S Ability To Resist Failure In Bending The Accompanying Data Are On Flexur 1 (50.8 KiB) Viewed 37 times

Flexural strength is a measure of a material's ability to resist failure in bending. The accompanying data are on flexural strength of concrete (in MegaPascal, MPa, where 1 Pa (Pascal) = 1.45 x 10-4 psi): 5.7 8.2 7.3 7.8 8.1 7.4 6.8 7.7 7 6 3,8,8,5,3 7 8 127 9 077 10 9 11 658 00234677889 7.2 8.7 What appears to be a representative strength value? MPa (a) Construct a stem-and-leaf display of the data. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) Stems Leaves 5 X Need Help? 6.1 9.7 6.8 7.7 (c) Do there appear to be any outlying strength values? O Yes ● No Read It 7.0 9.7 Do the observations appear to be highly concentrated about the representative value or rather spread out? O highly concentrated around the representative value Ⓒspread out with a large range 7.6 7.8 (b) Does the display appear to be reasonably symmetric about a representative value, or would you describe its shape in some other way? O reasonably symmetric Ⓒ positive skewness O negative skewness O completely random distribution (d) What proportion of strength observations in this sample exceed 10 MPa? (Round your answer to two decimal places.) 6.5 11.6 7.0 11.5 6.3 11.8 7.9 10.8 9.0