Question

stastics sum ,mean ,median,mode

Answer 1

mean: the sum of observation divided by no of observations is called mean

median: the middle most value of a given data when arranged in ascending order or descending order

mode: the most frequently occured value in a given data is mode


and these all vome under statistics.

Answer 2

mean = sum of observations /total no. of observations.
meadian for odd no. = n+1/2
median for even no. s. = n/2,n/2 +1
mode is the max. no. of observations