I was looking for example "cdf" problems to do to get ready for a test and I came up with one that I didn't understand....

The following curve represents the cumulative density function for a random variable X.

[The picture is attached as a document]

Which of the following statements would be aspects of the original probability function of X?

I. The curve is symmetric

II. The curve is a uniform distribution

III. The median is 5.

I only

III only

I and III only

II and III only

I, II, and III

Can anyone explain? I'm freaking out cause I'm not really good at these.

Thanks.