What are our feet like?

First, we gathered the data.

Math is every place. But you have to understand what it means.

We are learning about using numbers.We are learning about:

• mean (average)
• median (middle)
• mode (most popular)
• range (distance between high and low.)

We did a short project. We used math to find out the answers to a question: What do we know about the size of our feet in this classroom?

First, we gathered our data. We measured our feet. We used centimeters.

Then we put it in a data table.

Second, we put our data into a data table. It was on the board.

Third, we reviewed how to find the mean. You add and divide for the mean.

Our data table tells us different things.

 The mean shoe length in our classroom was 28.7 cm. That is average (for us.) Centimeters uses decimals.

For the median we put the data in order. Then we found the middle number. It was 29. The median is 29 cm.

We saw two 29's in our list. That means the mode is also 29 cm. It is a popular shoe size.

Here is our work space.

Then we looked at the range of sizes. The biggest shoe was 30.5 cm. The smallest shoe was 27 cm. 

30.5-27= 3.5 
The range is 3.5 cm.

We had only a few "data points" in our "sample." So we cannot say things like "the average shoe is 28.7 cm." We can just say things like:

1.  The average shoe in our class this week was 28.7 cm.
2. The most common shoe length was 29 cm.
3. There is about 3 and a half cm range of shoe length from the biggest to the smallest.