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.

Andrew: Khalid, what does this mean absolute deviation value tell me about the data set?

Image description: As Khalid speaks, a calculator screenshot appears displaying
one-variable statistics results: X bar equals 2.033034072. The sum of x is 87.42046512. The sum of x squared is 257.029242. S x is 1.374083744. Sigma x is 1.358012036. n is 43.

Khalid: The average president serves 5.071 years. If you look at all the presidents individually, their specific length of service will be, on average, 2.033 years different from that 5.071 average.

Image Description: 5.071 plus or minus approximately 2.033 appears on screen.

Andrew: So, the average president will serve 5.071 years, give or take approximately 2.033 years?

Khalid: Yep!