Aisha Baloo
ADA1 Stat 427
Homework #1
09/08/2014
1a) (3pts) Make a stem-and-leaf display, histogram, and boxplot for the Precip data.
Stem and Leaf Plot for Precip Data
stem(d1$Precip)
Note: Using the option, scale = 2, makes the plot two times wider. In
Aisha Baloo
ADA1 Stat 347
Homework #2 Part 1
09/16/2014
1)Unseeded vs. Seeded Population
= mean of total rainfall falling from the cloud base
1a) Histogram of Unseeded Precipitation of Clouds
d1 <- read.csv("http:/statacumen.com/teach/ADA1/ADA1_HW_02_F14
Aisha Baloo
ADA 1 STAT 427
Homework #3
09/30/2014
1)Cloud Seeding
a) Assumptions of normality of Seeded and Unseeded sampling distribution and mean distribution
Seeded DistributionChecking Normality Assumption
d1 <- read.csv("http:/statacumen.com/teach/AD
Aisha Baloo
ADA 1 STAT 427
Homework #5
10/13/2014
1)REM with ethanol treatment
a) Make appropriate graphical summary of the data to compare the groups. Compute sample means and standard
deviations for the 4 treatment groups.
dat1 <- read.table(text="
+ 0
Aisha Baloo
ADA 1 STAT 427
Homework #7
11/12/2014
1.ET
a) 95% CI for the proportion of p of all adults that favor such a tax hike
Let p = the proportion of all adults willing to support the tax hike to find extra-terrestrials.
Examining the 95% proportion
Aisha Baloo
ADA 1 STAT 427
Homework #8
11/12/2014
1.Gas Mileage and Automobile horsepower
a) Examining the scatterplots of miles per gallon and horsepower versus logmph and loghp, the scatterplot most
appropriate for the linear regression is the natural l