Types of Continuous Series Article shared by The continuous series are mainly of the following types: Image Source: cdn2.hubspot.net/hub/23667/file-274237924-jpg/images/continuous_improvement.jpg Inclusive series. Exclusive series. Open end distribution. Cumulative frequency distribution. Equal and Unequal class-interval series. Mid-value series. Bivariate frequency Distribution. Related Articles: What do you mean by Mode? Classification of data What do you mean by discrete series?