What Is an Ogive Shape

An ogive or ogival arch is a pointed, “Gothic” arch, drawn with compasses as outlined above, or with arcs of an ellipse as described. A very narrow, steeply pointed ogive arch is sometimes called a “lancet arch”. The most common form is an equilateral arch, where the radius is the same as the width.

How do you draw a cumulative frequency curve?

To calculate the cumulative frequencies, add the frequencies together. A cumulative frequency diagram is drawn by plotting the upper class boundary with the cumulative frequency. The upper class boundaries for this table are 35, 40, 45, 50 and 55.

Why is ogive called ogive?

The ogive for the normal distribution resembles one side of an Arabesque or ogival arch, which is likely the origin of its name.