Age of Prime Ministers This list represents the ages of the first six prime ministers of India when they first assumed office.
a. Find the mean age, rounding to the nearest tenth. Interpret the mean in this context.
b. According to a survey, people in the 20th century had an average age of 80 years. How does the mean age of these prime ministers compare to that?
c. Which of the prime ministers listed here had an age that is farthest from the mean and therefore contributes most to the standard deviation?
d. Find the standard deviation, rounding to the nearest tenth.