All the third graders at Roth Elementary School were given a physical-fitness strength test. These data resulted:
a. Construct a dotplot.
b. Find the mode.
c. Prepare a grouped frequency distribution using classes 1–4, 4–7, and so on, and draw a histogram of the distribution.
d. Describe the distribution; specifically, is the distribution bimodal (about what values)?
e. Compare your answers in parts a and c, and comment on the relationship between the mode and the modal values in these data.
f. Could the discrepancy found in the comparison in part e occur when using an ungrouped frequency distribution? Explain.
g. Explain why, in general, the mode of a set of data does not necessarily give us the same information as the modal values do.

  • CreatedAugust 27, 2015
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