Question

From the following data find out mean: 7, 4, 17, 19, 11, 16, 15, 14, 9 and 11

Answer 1

SOLUTIONS:

BY direct method

mean = sum of observation ÷ number of observation

n= 10

therefore mean = (7+4+17+11+19+16+15+14+9+11) ÷ 10

mean = 123 ÷ 10

mean = 12.3