Thirty AA batteries were tested to determine how long they would last. The results (variable = battery longevity), to the nearest minute, were recorded as follows:

423, 369, 387, 411, 393, 394, 371, 377, 389, 1409, 392, 408, 431, 401, 363, 391, 405, 382, 400, 381, 399, 415, 428, 422, 396, 372, 410, 419, 386, 390

QUESTIONS:

1.Construct a frequency distribution table with 5 equal classes. (Hint: the first class should be 360to379).

2. What is the range for this variable?

3. What are the mean and median for this variable?

4. What is the outlier among these values?