According to, the numbers of billionaires in the five states in the Northeast with the most billionaires are given in the table.
New York ......... 67
Connecticut ......... 11
Pennsylvania ........ 7
Massachusetts ........ 7
New Jersey ......... 5
a. Find and report the mean number of billionaires in context; report the number to the nearest tenth.
b. Sketch a dotplot of the data, and mark the location of the mean. You can use a triangle under the axis (m, like a fulcrum) to mark the location; it should be at the balance point.
c. Find and report the standard deviation of the number of billionaires in context; round to the nearest tenth.
d. Which of the given numbers is farthest from the mean and therefore contributes most to the standard deviation?

  • CreatedJuly 16, 2015
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