According to Forbes.com, 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?