Describe the appearance and use of a closeness matrix

What will be an ideal response?

A closeness matrix is a table that lists each department (or operation) across the top and down the left side of the table. At the intersection points of each pair of departments there is a closeness factor that gives a measure of the relative importance of each pair of centers being located together. The layout planner uses these factors in conjunction with a block plan to assign departments to a physical location in the facility.