Problem 1
Suppose we roll a 6 sided dice once and would like to know the following:
1
1
1
3
A) ( < 4) = 6 + 6 + 6 = 6
There are 3 numbers less than 4. We could land on any of them (i.e. 1, 2, 3) . Therefore, to account
for the probability we add the proba
Introductory Statistics
Probability Introduction
Every Event in our physical universe has an outcome. The events with known results are defined as
Deterministic. Examples of deterministic events, subjects, or objects are: timetable, maps, and
accounting.
Problem 1
Suppose we roll a 6 sided dice once and would like to know the following:
A)
P ( number< 4 )
B)
P ( number is odd )
C)
P ( number 5 )
D)
P ( number 5 )
Problem 2
Suppose we have a bag of M&Ms with the following color distribution:
20% red 40% ye
STA 2023
Data Analysis Laboratory
Sample Average (Mean) X
Standard Deviation X
First Quartile X
Third Quartile X
IQR X
Max X
Min X
Range X
Median
Sample Average (Mean) Y
Standard Deviation Y
First Quartile Y
Third Quartile Y
IQR Y
Max Y
Min Y
Range Y
Medi
STA2023
Lab 1
Name(s): Khalid Snowden
The following lab is to give you a chance to generate your own graphs and statistics using software.
Paste your graphs and statistics on this word document, use these graphs and statistics to answer a few questions, a
Summary statistics:
Column
BWT
n
Mean Std. Med Ran Mi Max Q1 Q3 IQ
dev ian ge
n
R
.
189 2944. 729. 297 428 709 499 24 34 10
6561 022
7
1
0
14 75 61
42
Summary statistics:
STA2023
Lab 1
Name(s):
Madison Parker
The following lab is to give you a chance to generate your own graphs and statistics using software.
Paste your graphs and statistics on this word document, use these graphs and statistics to answer a few questions, a
Additional Help for Finding Probabilities Using a Venn Diagram
Note: Be sure you know when you can use a Venn diagram to calculate a probability. You can not use the Venn diagrams
discussed in this course to calculate all probabilities. You can use the Ve
Probability Theory Worksheet 2 Key
Solve the problems below using your knowledge of probability. Write fractions in lowest terms.
1. What is the probability of choosing an ace from a standard deck of playing cards?
4
52
=
1
13
2. What is the probability o
Probability Theory Worksheet 1 Key
Solve the problems below using your knowledge of probability. Write fractions in lowest terms.
4
52
1. What is the probability of choosing a king from a standard deck of playing cards?
=
1
13
2. What is the probability o
STA 2023 - Statistics 1 o ’ TEST 4 Name:
Show all of your work clearly in the space provided for full credit. You may use calculators on this exam. When
appropriate, answer questions using complete sentences
1. Some people are concerned that new tougher
Exam
Name_
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Classify the variable as categorical or quantitative.
1) A person's height in feet
A) Categorical
B) Quantitative
2) A person's gender
F) Cat
Exam Answer Key
1) B
2) F
3)
4)
Key:
7
= 72%
5) B
6) H
7) C
8) K
9) A
10) J
11) E
12) G
13) D
14) J
15) A
16) G
17)
There is a strong, positive, linear association between the year and the first class postal rate.
Postal rates have increased over time.
18
STA 2023 Lab Worksheet #1
Name: _
SFCC ID#: _
For this Lab, you will need to access a computer program called Minitab. There
are a few ways you can do so there are computers with Minitab installed in the Math
Labs at both the main campus and downtown camp
Statistical Tasks Using the TI-83 or TI-84 Calculator
To find the mean, standard deviation, median, quartiles, etc. from a single
data set:
1. Enter the data into the calculator: Press STAT, then choose 1: Edit., then
enter all the data into the first col
Statistical Tasks Using the TI-83 or TI-84 Calculator
To find the probability of getting a certain number of successes in the
Binomial model:
1. On the calculator, press 2ND, then VARS, and choose 0: Binompdf(
2. Type in the number of trials (n), then a c
Statistical Tasks Using the TI-83 or TI-84 Calculator
To find the percentage of an area in the normal distribution, given one or two
cutoffs:
1. Draw a picture of the normal distribution, including the mean in the
middle and the cutoffs placed appropriate
Some Topics on Exam 2
Reading scatterplots; identifying form, direction, strength, and outliers (Ch. 6)
Correlation is a measure of the strength of a linear relationship; 1 < r < 1 (Ch 6)
Knowing the conditions needed to use correlation and its propertie
Starter #6 (09-22-2015)
Medical researchers have conducted a study
where they collected data on 650 high blood
pressure patients. They measured each persons
systolic blood pressure as well as the number of
5 oz. servings of red wine each person drank in
a
Some Topics on Exam 1
Identify cases and variables in a data situation (Chapter 1)
Think about details of data, including who is asking about the data, what data is
being collected from each case, why the data is being collecting are
collecting data, and
Starter #7 (09-29-2015)
Suppose the following scatterplot shows
data collected in 2002 on the distance
college students without a cell phone were
away from home, and how much they spent
on long distance calls in one month:
a) What are the cases in this su
Starter #8 (10-01-2015)
Marketing researchers are trying to predict how
many units of a product will sell based on the
price the product might be sold at (in dollars).
From their original test market data, they found
that the average number sold across al
Starter #5 (09-15-2014)
Suppose that fully grown beetles of a
particular species have lengths that have
a mean of 4.2 cm and a standard
deviation of 0.5 cm. A coexisting species
of caterpillars, when fully grown, have
lengths that have a mean of 7.7 cm wi
Starter #2 (09/01/2015)
Suppose a survey of 150 adults from around
the U.S. asked them whether or not they
drank soda on a regular basis, and also asked
them whether or not they eat breakfast in the
mornings at least 4 times a week. Of the
110 who ate bre
Starter #4 (09/08/2015)
A survey of 13 Alachua county
households asked how many times in the
past year the head of the household went
to a movie theater to watch a movie. The
data collected is shown below:
1
3
5
0
2
12
0
4
12 6
20
2 3
a) What are the case
Starter #3 (09/03/2015)
Suppose that the chart shown below was
made for you by your colleagues and you
will be using it as part of your presentation:
Identify two issues with the graph that you
will want to fix before your presentation,
and explain why ea
TAKE HOME EXAM: Students may work with each other, but are NOT to get help from other people.
STA 2023 Exam #3
Name: _
SFCC ID#: _
1. This is a TAKE HOME EXAM. You may use your notes, book, and work with classmates.
However, you may NOT talk to anyone bes
Some Topics on Exam 3
Identifying whether a study is observational or experimental (Chapter 11)
Knowing the principles of experimental design and how they are executed in
experimental studies (Chapter 11)
Knowing how the use of a placebo and a blind or do
Starter #1 (08-27-2015)
Data is regularly collected on collegiate
student-athletes in Florida. One study,
conducted each year by the state in the
spring semester, records the athletes
college, sport played, and previous
semesters GPA.
a) What are the case
Sample Free Response Questions for Exam 3
1. A popular game at many carnivals is the Test Your Strength game, in which the
objective is to strike a pad as hard as possible with a big mallet in hopes of ringing the
bell. Modern electronic versions of these