*** JOBS JOBS JOBS ***

Come work for the Acme

Bicycle Company. Our average

rate of pay is $10 per hour!

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$

"How can this be!?" said Jenny. She was very angry. The advertisement said that the average rate of pay is $10/hour.

She went to see the owner.

The Acme Bicycle Company has 10 employees. 9 of them make $1/hour, and 1 of them makes $91/hour.

Recall: the average is computed by (1) adding up all of the values, and (2) dividing by the number of values.

Fred

$1/hour

Ted

Jed

Ned

Ed

Ced

Red

Zed

Gred

Owner

$91/hour

Sometimes, an average can be deceptive. That's why there are other ways to describe data. Today we are going to look at the...

MODE

The mode is the value that shows up the most often in the data.

What is the mode pay rate at the Acme Bicycle Company?

33°, 35°, 35°, 36°, 33°, 31°, 34°, 33°, 35°, 33°, 42°, 34°

What is the mode temperature on this list?

6, 0, 1, 1, 4, 6, 5, 1, 7, 7, 7,8, 1, 0, 1

Yes, figuring out the mode isn't too difficult, huh? It's easy to remember what the mode is, because "mode" sounds a lot like "most".

DID YOU KNOW?

Did you that "data" is a plural noun? You should say "These are the data" or "The data look fine" and not "This is the data" or "The data looks fine".

The singular form of "data" is "datum". If your list has only one value, you can refer to it as a datum. Otherwise, it is data. Pretty weird, huh?

What about this?

Look at this list of data: 4, 7, 8, 10, 15, 16. No value appears more than once. What do you think the mode is? Click one below:

Here's something else that can happen. Look at these data:

10, 10, 10, 11, 14, 15, 20, 20, 20.

In this case, we have TWO numbers that show up the most, so this list of data has TWO MODES.

The MODE is the number or numbers which show up the MOST

If every number appears once, then there is NO MODE

If more than one number appears the most, then there are MORE THAN ONE MODE.