Real-Life Scenarios
Text Version

(Introduction music)
Image description: Andrew and Khalid are sitting together at a table in math class. Documents and calculators are on the table. Justyce stands to the left of them

Khalid: Oh! I get it! Looking at the first five presidents, the average presidency was 6.868 years with most of the presidents being within 1.572 years of the average.

Image description: As Khalid speaks, a table appears showing the first five presidents and the number of years that each president served:
1. G. Washington served 6.34 years
2. J. Adams served 4 years
3. T. Jefferson served 8 years
4. J. Madison served 8 years
5. J. Monroe served 8 years
The following phrases also appear on screen above the table:
Average is 6.866 thousandths years
Within 1.572 thousandths years of the average

Andrew: If I subtract 6.868 minus 1.572, I get 5.296. If I add 6.868 plus 1.572, I get 8.44.

Image description: As Andrew speaks, a calculator screen shot shows the calculation that he is describing.

Justyce: Yes! This standard deviation is very low, which means the data points are close together. Most of the first five presidents should have served between 5.296 years and 8.44 years.