Question

Fond the mean of 50 observations.It is given that mean of 32 of then is 28 and the mean of remaining 18 observation is 30

Answer 1

Answer:

Mean=28.72

Step-by-step explanation:

Mean of 32 observations is 28

sum of the observations= 32×28=896

Mean of 18 observations = 30

sum of observations =18×30=540

Mean of 50 observations =(896+540)/50

= 1436/50

= 28.72

Answer 2

Answer:

28.72

Step-by-step explanation:

Mean of 32 observations is 28

sum of the observations= 32×28=896

Mean of 18 observations = 30

sum of observations =18×30=540

Mean of 50 observations =(896+540)/50

= 1436/50

= 28.72