A Typical Math Student

1
A Typical Math Student
2
About the Class

• Class Eighth Grade Algebra
• Students Boys and Girls, 13- 14 years old
• Number of Students 26
• We measured
• Height
• Hand Span
• Wrist Circumference

3
Measures of Center

• Mean The average. Add all data points, then
  divide by the number of data points.
• Median The middle data point in an ordered
  list.
• Mode The data value that occurs the most.

4
Class Heights

• Mean 171 cm
• Median 172.9 cm
• Mode 160 cm
• The middle 50 of the class has heights between
  160 cm - 178 cm.

5
Height
6
Class Hand Spans

• Mean 20.6 cm
• Median 20 cm
• Mode 20 cm
• The middle 50 of the class has hand spans
  between 19 cm - 22.5 cm.

7
Hand Span
8
Class Wrist Circumferences

• Mean 16.6 cm
• Median 16.25 cm
• Mode 15 cm
• The middle 50 of the class has wrist
  circumferences between 15 cm - 17.5 cm.

9
Wrist Circumference
10
Summary

• The typical math student has
• A Height 171 cm
• A Hand Span 20.6 cm
• A Wrist Circumference 16.6 cm