Cross Section Types
The first approach is typical of a cross sectional study.
Cross section types. In a longitudinal study you repeatedly collect data from the same sample over an extended period of time. The cutting plane cuts the object at an angle but the drawing is rotated for a better view by the observer. Conic sections are the cross sections we create by slicing a right cone in various ways.
In this view the cross sectional shape of ribs spokes and other projections of the object are featured. Types of cross section horizontal cross section vertical cross section. The participants in this type of study are selected based on particular variables of interest.
Definition a cross sectional study is defined as a type of observational research that analyzes data of variables collected at one given point in time across asamplepopulation or a pre defined subset. A revolving view is effective for elongated objects or the elongated section of an object. Steel beam cross sectional shapes fig.
There are two types of cross sectional studies. Analytical studies are used to investigate associations. To make our choice we need to know more about the benefits and purpose of each study type.
Longitudinal studies and cross sectional studies are two different types of research design. A cross sectional study involves looking at data from a population at one specific point in time. Both the cross sectional and the longitudinal studies are observational studies.
Square rectangular circular i shaped t shaped h shaped c shaped and tubular are examples of beam cross sectional shapes constructed from steel. There is a circle an ellipse a parabola and a hyperbola. The second requires a longitudinal study.