1.4. Measures of Spread http://www.ck12.org
TABLE1.10:
Year Rainfall (inches) Deviation Squared Deviations
1998 90
1999 56
2000 60
2001 59
2002 74
2003 76
2004 81
2005 91
2006 47
2007 59
Sum→Variance:
Standard Deviation:
Use the Galapagos Tortoise data below to answer questions 2 and 3.
TABLE1.11:
Island or Volcano Number of Individuals Repatriated
Wolf 40
Darwin 0
Alcedo 0
Sierra Negra 286
Cerro Azul 357
Santa Cruz 210
Española 1293
San Cristóbal 55
Santiago 498
Pinzón 552
Pinta 0- Calculate the Range and the IQR for this data.
- Calculate the standard deviation for this data.
- Ifσ^2 =9, then the population standard deviation is:
a. 3
b. 8
c. 9
d. 81- Which data set has thelargeststandard deviation?
a. 10 10 10 10 10
b. 0 0 10 10 10
c. 0 9 10 11 20
d. 20 20 20 20 20