Question

if the mean of 20 observation is 27.2, then the sum of all the observation is _____.(answer is 544)

Answer 1

Answer:

Step-by-step explanation:

the sum of all the observation = the number of  observations x mean

                                                   =20 x 27.2 =544

Answer 2

Answer: 544

Step-by-step explanation:

Let the sum of all the observations be 'x'

Therefore, x/20 = 27.2

=> X = 27.2 * 20

=> X = 544.0

Hope it helped!