Inquiry 1 proposals are due in lab Th 9/9or M 9/13

Homework #1 coming soon

Today: Analyzing Data and Statistics

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statesman.com 9/5/10

“Austin's top lottery outlets are surrounded by low-income housing.”

statesman.com 9/5/10

“the best-selling lottery outlet is the Zip-N, on Shoal Creek Boulevard at Anderson Lane, an area with a mix of upscale homes, older subdivisions and apartment complexes.”

2007 crime clock statistics:

From FBI.gov

1981 1986 1991 1996 2001 2006

1,000,000

1,100,000

1,200,000

1,300,000

1,400,000

1,500,000

1,600,000

1,700,000

1,800,000

1,900,000

2,000,000

U.S. Violent Crime

year

viol

ent c

rim

es

from fbi.gov

1981 1986 1991 1996 2001 2006

400.0

450.0

500.0

550.0

600.0

650.0

700.0

750.0

800.0

U.S. Violent Crimes per Capita

year

viol

ent c

rim

es/1

00k

peop

le

from fbi.gov

http://www.wunderground.com/cgi-bin/findweather/getForecast?query=78705

Average height in FRI Mon. lab vs. Thur. lab

Average height of Mon. lab vs. Thur. lab

… OR... Average height of male vs femaleFRI students

Enhancement of Biodiversity and Ecosystem Services by Ecological Restoration: A Meta-AnalysisJ M Rey Benayas, A C Newton, A Diaz, J M BullockScience 28 August 2009: Vol. 325. no. 5944, pp. 1121 – 1124

Looked at the results of 89 different ecological restorations.

Fig 1: Enhancement of Biodiversity and Ecosystem Services by Ecological Restoration: A Meta-AnalysisJ M Rey Benayas, A C Newton, A Diaz, J M BullockScience 28 August 2009: Vol. 325. no. 5944, pp. 1121 - 1124

(goods)

(nutrients and primary production)

(climate, water, etc)

P < 0.001P < 0.001

P < 0.05

P > 0.05

The P value tells us the probability that the differences or predictions in our data are from random chance.

The P value tells us the probability that the differences or predictions in our data are from random chance.

P< 0.05 (less than 5% chance of randomness)Is usually the acceptable cut-off.

P=0.05 is a 95% confidence level.

Fig 1: Enhancement of Biodiversity and Ecosystem Services by Ecological Restoration: A Meta-AnalysisJ M Rey Benayas, A C Newton, A Diaz, J M BullockScience 28 August 2009: Vol. 325. no. 5944, pp. 1121 - 1124

(goods)

(nutrients and primary production)

(climate, water, etc)

P < 0.001P < 0.001

P < 0.05

P > 0.05

We can have uncertainty about past events...or future events

World Population, human

36.4

9

2.3

UN Department of Economic and Social AffairsPopulation Division (2004)

Annual % increase in global population

Fig 53.23Predictions are based on current conditions and trends

http://www.esr.org/outreach/climate_change/basics/basics.html

UN-IPCC report

Most statistical work can be done, and more easily done, by computer using programs such as:

MS Excel

Open Office

SPSS

SAS

Most statistical work can be done, and more easily done, by computer using programs such as:

MS Excel is the most common.

Available from UT for cheap, ~$30.

If you have not used it, start practicing now.

Most statistical work can be done, and more easily done, by computer using programs such as:

Open Office is a free alternative.

If you have not used it, start practicing now.

Next

The Basics:Mean, median, and mode

Inquiry 1 proposals are due in lab Th 9/9or M 9/13

Homework #1 coming soon

Next Mean, Median, Mode, and T-test

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