Question

Would you say that the number of years presidents live after their first inaugurations are normally distributed?Explain.

Answer 1

Recall that a normal distribution is of the form:

Hence the central value of a normal distribution has the maximum frequency.

Notice from the given that the the lowest class interval has the highest frequency.

Hence the graph will not form a normal distribution.

Therefore the number of years presidents live for after their first inauguration is not normally distributed.