Question

the man of 10 observations is 5. if 2 is added to each observation and the multiplied by 3, then what will be the new mean?

Answer 1

Mean of 10 observation =5

Sum of obs=5*10=50

if 2 is added to each no. and multiplied by 3

So, it becomes

sum of observation=(50+10)*3=180

new mean =180/10=18