Stat 430/830 Solutions 2
2.
a) Experimental unit: one run of the MLE algorithm with a specific set of random starting values
for the parameters
Treatment: algorithm’s convergence tolerance with three
ENVS 178 Jan 10th
If you can add something its quantitative but if you cant add it its categorical
For example you can add GPA of 2 terms but you cant add a dog and a cat.
Horizontal bar graph
X axis
ENVS 178
Feb 14th, 2017
AmirArsalan Rafiei
20692663
Homework
y
we will use this formula and then substitute the numbers. Y= 20, mean=
23.84 and SD = 3.56 we will substitute these numbers into the form
Amirarsalan Rafiei
ID: 20692663
Jan 23rd, 2017
Homework
4. a) The distribution for the vineyards is skewed to the right, because the distribution is
skewed to the RIGHT the mean is more than the media
Jan 17th, 2017
Amir Arsalan Rafiei
ID: 20692663
Homework
10. As for the description of the distribution we can say skewed to the right, the center is
around 30 to 31 minutes, with most observations be
ENVS 178
Feb 2nd, 2017
Mid-term review
Answers are for question from lecture slides on learn for Feb 2 nd.
Ch1. #13
Answer:
Who is bears
What is weight, neck size, length, etc
Where not mentioned
When
Jan 10th, 2017
Amir Arsalan Rafiei
ID: 20692663
Homework
Questions 1:
a) Is it clearly labeled?
b) Does it violate the area principle?
c) Does the accompanying article tell the Ws and H of the variabl
ENVS 178
Feb 9th, 2017
AmirArsalan Rafiei
20692663
Homework
2. a. IQR = Q3 Q1 which is 6.55 5.6 = 0.95
range = max min = 7.45 4.15 = 3.3
b. The distributions is going to be skewed to the left because
/20
QUESTION #3 a) H0: The average chicken weight is the same for all three levels of the drug in the chick feed. OR 1= 2= 3 where i representsthepopulationaveragechickenweight for theith dose.OR = 0
1. The RCB ANOVA table:
Tests of Between-Subjects Effects Dependent Variable: IRI Source Corrected Model Intercept SECTION TYPE Error Total Corrected Total Type III Sum of Squares 41.667(a) 600.000 16
Stat 430/830 Solutions 1
Solutions for #1, 2 and 3 are in soln4301.doc, as well as computer output and plots for #4 and 5.
4.
a) From the dot plot of the data we see that the duration is very slightly
1. a) The study is observational because the researcher simply observed/gathered information. b) The target population is most likely all commercial bell pepper fields in some specified area (or all q
2. A suitable model can be:
/17
(3)
where : is the overall mean, "i is the effect of treatment i , $j is the effect of block j and ,ij are
the random errors which are N( 0, F2) - i.e. have a normal di