F 2 frequency of the class succeeding the modal class. Frequency distribution is a representation either in a graphical or tabular format that displays the number of observations within a given interval. Furthermore 1 hz refers to one cycle per second.
To put the frequency distribution definition into more mathematical terms frequency distribution is a way to orderly sort data based on the magnitude of the observations.
Mode lies inside the modal class. The number of classes can be estimated using the rounded output of Sturges rule N 13322logn N 1 3322 log n where N N is the number of classes and n n is the number of items in the data set. Frequency is equal to 1 divided by the period which is the time required for one cycle. For large data sets the stepped graph of a histogram is often approximated by.