Answer:
Total obs. = 7
Average = (n + 1 )/2
Average = 7 + 1 /2
= 8/2 = 4th obs.
= Sum of obs./ Total obs.
= 8,11,14,13,14,9,15/7
= 84/7
12
Explanation:
(8+11+14+13+14+9+15)/7 = 12
1.6m questions
2.0m answers