What is the meaning of Classmark and Prepare a Discrete Frequency DistributionImportant PointsThe word data means information. Statistical data are of two types : (i) Primary data (ii) Secondary dataWhen an investigator collects data himself with a defi…

What is Cumulative Frequency in statisticsIf the frequency of first class interval is added to the frequency of second class and this sum is added to third class and so on then frequencies so obtained are known as Cumulative Frequency (c.f.).There are t…