Interview Question: Distribution Basics

Sample Question #188 (probability theory)

Prove that every cdf must be bounded between 0 and 1.

Advertisements
This entry was posted in Sample Qs. Bookmark the permalink.

One Response to Interview Question: Distribution Basics

  1. Brett says:

    ANSWER
     
    I don’t remember if an actual mathematical proof exists. But a cdf (cumulative distribution function) reflects the probability of some event, and by definition probability always lies between 0 and 1. In other words, the statement is true by definition — and only functions bounded between 0 and 1 can qualify to be a cdf.
     

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s