Answer:
Mean: 20.714285714286 (rounds to 21)
Median: 21
Mode: No mode
Explanation:
14 17 18 21 23 25 27
Mean:
14+17+18+21+23+25+27 = 145
145/7 = 20.7142857143
Median:
14 17 18 21 23 25 27
21 is in the middle of the numerical list
Mode:
None of the number repeat, so there is no mode.