Christina Apuzzo
Statistics 131
Lab One
23 February 2016
1. The question I am answering in my study is if the type of dog affects how long until they
are adopted. I anticipate finding if the breeds weight creates correlates with the amount
of years spent
Exam Guideline
*Show all your work*
1.
The percentage of unemployed workers in each of 20 randomly selected cities
are as follows:
3.1
5.4
4.5
3.8
8.2
7.2
1.4
3.8
6.3
4.6
1.8
7.2
2.4
2.5
8.8
4.8
a) Calculate the 20th percentile.
b) Calculate the 40th perc
UNGROUPED DATA
Example Problem: 1,4,1,3,2,1,1
First, rank the data
1, 1, 1, 1, 2, 3, 4
Measures of Central Tendency:
Range = Highest Data Value Lowest Data Value
Mean ( ):
Measures of Variability:
Range = 4-1 = 3
n
Average Deviation (AD):
AD =
n
Where
n
2-4
P
o
si
ti
o
n
:
V
a
l
u
e
:
1
4
2
2
4
4
3
5
6
4
6
2
5
7
7
6
7
9
7
8
4
8
8
9
9
8
9
1
0
9
6
1
1
9
8
1
2
1
3
T
o
t
a
l
9
9
1
0
0
1
0
1
5
a) Mean, = = 78.0769
b) Before finding the median, you should rank the data from the smallest
to the largest first as
Dr. Arizes Classnotes
Page 5-9
Question 14: Suppose that there are two events E1 and E2 such that P (E1) = 0.20 and P
(E2) = 0.30
a) Given that E1 and E2 are independent, what is P (E1 E2)?
P (E1 E2) = P (E1) * P (E2)
= 0.2 * 0.3
= 0.06
b) Given that E1 a
Solution for assigned problems for chapter 4
Page 4-9
Question 4:
X
2
9
13
5
Y
7
4
5
3
XY
14
36
65
15
X2
4
81
169
25
Y2
49
16
25
9
= - 0.1127
= 5.5671
a) b1 = -0.1127, b0 = 5.5671
b) b0 is Y hat () when X = 0. However, note that we must be reasonably sure
Lab#9
Purpose:
There are three purposes of this lab:
1. To test the linear correlation between the two quantitative variables from Lab 1
2. To find the equation of the regression line for the variables
3. To use the line fro prediction
All of the data in
Lab #6
Purpose:
There are three main goals of this lab: (1) To form confidence intervals and performs
hypothesis tests using my sample quantitative (V3) data (number of pages), (2) To
determine an appropriate sample size for a selected error tolerance, an
Lab#8
Purpose:
The purpose of this lab is to use the Chi-square method to test a hypothesis using either
Plan A (Goodness of Fit) or Plan B (Independence). In this lab I will use Plan B
(Independence).
Part OneExpected Frequencies:
Table 1. Frequency Dist
Things to Know for Test 1
Population versus sample
Data: Qualitative versus Quantitative
Data: Raw (list of individual values) versus Frequency (values in table with frequencies)
Grouping Strategiescreating data groups
Frequency
Relative frequency
Clas
Lab#5
Purpose:
The purpose of this lab is to define a binomial experiment, and to find binomial
probabilities using two different methods: formula and table/computer.
All data in this lab is from a sample of 40 books, which represents a population of the
Lab#6
Purpose:
The purpose of this lab is to standardize data, to compute probabilities using the standard
normal distribution, and to find values given probability.
Part OneStandardize Sample (V3) Variable (Number of Pages) Data:
Computer-Calculated Mean
REVIEW SHEET EXAM I- MICROBIOLOGY BIOL213 FALL2011
UNIT 1: INTRODUCTION TO MICROBIOLOGY & TAXONOMY
What is Microbiology ?
Study of microorganisms - includes eukaryotes such as fungi, protists, prokaryotes, Viruses & prions
Germ refers to a rapidly growin
MATH 131Statistics
Chapter 3 & 4 Special Assignment
1. One hundred voters were surveyed and asked their political party and their political
philosophy. Here are the results:
Philosophy
Liberal
Moderate
Conservative
Total
Democrat
16
27
5
48
Republican
3
2
MATH131Statistics
Lab #4
Purpose:
The purpose of this lab is to understand and find both simple and conditional probabilities, to use
the Multiplication Rule, and to use the Addition Rule.
All data in this lab is from a sample of 40 books, which represent
]
MATH131
LAB 1
Purpose:
The purpose of this study is to determine my reading patterns over the past 10 years. Do I read
more of one type of book over another? Did I read more in previous years than I do now? I think
I will find that the type of books tha
8/11
SYLLABUS
Code:
MATH 131
Title:
Division: MATHEMATICS
STATISTICS
Department: MATHEMATICS
Course Description:
This course begins with descriptive statistics, including
graphical representations of data and measures of central tendency, position and
var