Class Notes (1,100,000)
US (480,000)
UCLA (10,000)
STATS (200)
STATS 10 (100)
Tsiang (3)
Lecture 1

STATS 10 Lecture Notes - Lecture 1: Bar Chart, Gestation, Birth Weight


Department
Statistics
Course Code
STATS 10
Professor
Tsiang
Lecture
1

This preview shows pages 1-2. to view the full 6 pages of the document.
Question 1:
The unit of observation in the data is the birth of infants.
There are 22 different variables recorded in total.
Categorical
Numerical
Bmonth
Apgar5
Bday
BirthWeight
DOW
Gestation
Gender
Fage
Premie
Mage
LowBirthWeight
Feduc
Marital
Meduc
Racemom
TotPreg
Racedad
Visits
Hispmom
Gained
Hispdad
Smokes
Question 2:
There are totally 192 smokers. The percentage of smoking mothers among the
sample is 9.917%(=0.09917).
Question 3:
Of those categorical variables, LowBirthWeight might be associated with the
othe’s sokig haits.
find more resources at oneclass.com
find more resources at oneclass.com

Only pages 1-2 are available for preview. Some parts have been intentionally blurred.

Comparing the column proportion, we see the LowBirthWeight ratio among those
ho do’t soke is .47=4.7%, heeas the LoBithWeight popotio
among those smoke is 0.078125(=7.81%). The low birth weight is higher among
those othe sokes. Theefoe, thee’s eidee poitig that LoBithWeight
is associated with smoking.
Question 4:
find more resources at oneclass.com
find more resources at oneclass.com
You're Reading a Preview

Unlock to view full version