Question

Pranali was practising for a100m running race. She ran 100 m distance 20 times . The time required, in seconds , for each attempt was as follows.
18,17,17,16,15,16,15,14,16,15,15,17,15,16,15,17,16,15,14,15 Find the mean of the ​

Answer 1

(18+17+17+16+15+16+15+14+16+15+15+17+15+16+15+17+16+15+14+15)/20=314/20=15.7