Question

Mean of five observations is m. If each observation is tripled, then find the new mean?​

Answer 1

Answer:

54

54

mean of 15 observations = 18

Sum of 15 observations = 18×15 = 270

If each observation is multiplied by 3

Sum of 15 observations = 18×15×3 = 810

New Mean =

15

810

= 54

Answer 2

Answer: 3m

Step-by-step explanation:

mean of 5 observations = m

Sum of 5 observations = 5 × m

If each observation is tripled then,

Sum of 5 observations = 5 × m × 3 = 15m

New Mean = $\frac{15m}{5}$  

After substituting, the final answer is 3m.

Hope its helpful!