# Question: A total of 58 AISI 1018 cold drawn steel bars were tested

A total of 58 AISI 1018 cold-drawn steel bars were tested to determine the 0.2 percent offset yield strength Sy. The results were

Where Sy is the class midpoint and f is the class frequency. Estimate the mean and standard deviation of S y and its PDF assuming a normal distribution.

Where Sy is the class midpoint and f is the class frequency. Estimate the mean and standard deviation of S y and its PDF assuming a normal distribution.

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