A set of data is a set of nuumbers .

It is 52.

You describe the shape, not of the data set, but of its density function.

You describe the shape, not of the data set, but of its density function.

You describe the shape, not of the data set, but of its density function.

You describe the shape, not of the data set, but of its density function.

The median in a set of data, would be the middle item of the data string... such as:

1,2,3,4,5,6,7 the Median of this set of data would be: 4

No. The data set will remain the data set: they are the observations that are recorded.