Question

12 cm 9cm 14 cm 20 cm 13 cm 10 cm
1 Mia measured the lengths of six pieces of string.

a)Work out the mean length.

b) How many pieces are longer than the mean length?

c) How many pieces are shorter than the mean length?
Rex​

Answer 1

Answer:

a) mean = sum of observation/ total no of observation

= 12 + 9 +14 +20 +13 +10/6 = 78 / 6 = 13

b ) 14 , 20 are longer than the mean length

c) 12 , 9 , 13 , 10