Concept explainers
(A) Find set of the ungrouped mean and sample standard data deviation of the following set of
ungrouped sample data.
(B) What proportion of the measurements lies within 1standard deviation of the mean? Within
(C) Based on your answers to part (B), would you conjecture that the histogram is approximately bell shaped?
(D) Explain. To confirm your conjecture, construct a histogram with class interval width 1 starting at 0.5.
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