ECON 2500 Lecture Notes - Lecture 1: Variance, Data Set, Standard Deviation

• School: York University
• Department: Economics
• Course: ECON 2500
• Professor: davidlee

Document Summary

Ap econ 2500 f16 session 1b (sep 12 and 14) Exa m p le : ba se d o n ta b le 1. 2. 25 = 80 25100 +12 = 20. 5 1 = 20 +21. 50 = 80 50100 +12 = 40. 5 2 = 40 +41. 75 = 80 75100 +12 = 60. 5 3 = 60 +61. Five num b e r sum ma ry. Iq r = q 3-q 1 = 200 54. 5 = 145. 5. Q 1 218. 25 = 54. 5-218. 25 = -163. 75. Q 3 + 218. 25 = 200 + 218. 25 = 418. 25. In this e xa mp le , the o b se rva tio ns o f 438 465 479 700 700 951 1148 2631 a re a ssume d to e o utlie rs. Va ria nc e a nd sta nd a rd d e via tio n. 5 s2 = 10/(5-1) = 2. 5 2 = 10/5 = 2.