The curve formed by connecting the points whose x-coordinates are the upper limits of the class-intervals and y-coordinates are the corresponding cumulative frequencies is known as the ________ curve. 

The ogive is the free hand graph obtained by joining the points whose x-coordinates are the upper limits of the class intervals and the y coordinates are the corresponding cumulative frequencies in statistics.

For cumulative frequencies arranged in ascending order, a less than ogive is constructed, and for cumulative frequencies arranged in descending order, a more than ogive is constructed.