Standard deviation is a way to describe the data's precision accuracy average Question 10 1 pts A nylon safety harness is to be manufactured from a nylon polymer. The material is made into several specimens and tensile tested. The average tensile strength TS=85MPa, with scatter s=80MPa. The nylon polymer is likely to be because the scatter is . (s: standard deviation) satisfactory, is negligible reasonably safe, marginal unsatisfactory, significantly large For ceramics, a three-point loading technique is used instead of a tensile test because a tensile test would have difficulty causing ceramic fracture a three-point loading technique fractures the ceramic's weaker compressive side a three-point loading technique does not use a dogbone specimen shape Question 12 1 pts Without load and cross-sectional dimensions calculated at each point, engineering stress can be converted to true stress at all points only before necking begins only after necking begins True strain computation uses the , while engineering strain computation does not. instantaneous length initial length natural logarithm ratio of the instantaneous and initial lengths Which material has high strength, low ductility and low toughness? Which of the following would be the best description for the mechanical properties of material B? St low strength high toughness low ductility Which material has the highest ductility