Find the mean of the following data:
20,40,60,80,100
We know that,
Mean=SumofallobservationsTotalnumberofobservations
=20+40+60+80+1005
=3005
=60
Hence, mean of the given observation is 60.
Find the mean of the following data, using assumed-mean method: Class0−2020−4040−6060−8080−100100−120Frequency203552443831
Find the mean, median and mode of the following data: Class0−2020−4040−6060−8080−100100−120120−140Frequency681012653