Before you keep reading...

Runestone Academy can only continue if we get support from individuals like you. As a student you are well aware of the high cost of textbooks. Our mission is to provide great books to you for free, but we ask that you consider a $10 donation, more if you can or less if $10 is a burden.

Support Runestone Academy Today

Before you keep reading...

Making great stuff takes time and $$. If you appreciate the book you are reading now and want to keep quality materials free for other students please consider a donation to Runestone Academy. We ask that you consider a $10 donation, but if you can give more thats great, if $10 is too much for your budget we would be happy with whatever you can afford as a show of support.

Support Runestone Academy Today

What Is A Statistic?

Many people discuss statistics, but not everyone knows what a statistic actually is.

Statistic Definition

A statistic is a fact of the data. A statistic is any piece of information you can get from a set of data.

For example, suppose you have a dataset containing the heights of all students in this class.

The following are all statistics from that dataset.

• The shortest height is 146cm.

• The tallest height is 192cm.

• There are 19 students in this class.

• The average height is 166.16cm.

• The sum of all heights in the class is 3157cm.

• Half the maximum height is 96cm.

Some statistics are more common and useful than others. For example, knowing the average height will likely be more useful in real life than knowing the sum of all heights. This chapter will guide you through the most common descriptive statistics.

Suppose you have a dataset on how far students travel to get to school.

Q-1: What are some important statistics of the dataset above?

You have attempted of activities on this page