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The article Can We Really Walk Straight (Amer. J.of
Chapter 1, Problem 73(choose chapter or problem)
The article Can We Really Walk Straight? (Amer. J.of Physical Anthropology, 1992: 1927) reported on anexperiment in which each of 20 healthy men was askedto walk as straight as possible to a target 60 m away atnormal speed. Consider the following observations oncadence (number of strides per second):.95 .85 .92 .95 .93 .86 1.00 .92 .85 .81.78 .93 .93 1.05 .93 1.06 1.06 .96 .81 .96Use the methods developed in this chapter to summarizethe data; include an interpretation or discussion whereverappropriate. [Note: The author of the article used a rathersophisticated statistical analysis to conclude that peoplecannot walk in a straight line and suggested severalexplanations for this.]
Questions & Answers
QUESTION:
The article Can We Really Walk Straight? (Amer. J.of Physical Anthropology, 1992: 1927) reported on anexperiment in which each of 20 healthy men was askedto walk as straight as possible to a target 60 m away atnormal speed. Consider the following observations oncadence (number of strides per second):.95 .85 .92 .95 .93 .86 1.00 .92 .85 .81.78 .93 .93 1.05 .93 1.06 1.06 .96 .81 .96Use the methods developed in this chapter to summarizethe data; include an interpretation or discussion whereverappropriate. [Note: The author of the article used a rathersophisticated statistical analysis to conclude that peoplecannot walk in a straight line and suggested severalexplanations for this.]
ANSWER:Step 1 of 8
Begin by computing the mean and standard deviation of the given data. Use the formula for the mean, noting that there are 20 observations.
