Chapter 6 and 7
Correlation and Linear Regression
Goal: Investigate the relationship between
bivariate data.
When is there association?
When is the association linear?
When the association is linear, what is the best
line to predict the relationship?
Week
Intro to Chapter 16
Confidence
Intervals
Recall Chapter 15 ballot initiative example
Six hundred people were surveyed
36% of those surveyed were in favor of the
measure.
Is this the actual proportion of voters in favor?
Not likely! Other samples would giv
Homework Math 221
Business applications.
1. Suppose the cost and revenue functions for a company producing and selling units of their
product are given by and .
a. What are the fixed costs?
b. What is the marginal cost?
c. Find the average cost function.
Math 221 - How to study for Exam 1
Do. Not. Cram.
Review homework and check the answers.
o Look for exercises that were particularly challenging what made them challenging and how should
you attack a similar problem?
o Practice the homework as if it were
Math 221 Final Exam Review
The following is an overview of the material weve covered this semester. Please note that the
list is not necessarily exhaustive, but should serve as a reminder of the material that weve
covered.
Calculus
Section 1 Limits
Limit
Math 221 Business Mathematics Terminology
Definitions.
A business revenue is the money that the organization takes in, either for goods, services, or
both. When focusing on one item, if units of the item are sold, we denote the revenue
function for produ
Excel Activity #5: Description:
Using a Random Number Generator and Constructing a Frequency Table/Histogram
This lesson creates a uniform distribution to simulate the outcome of a state lottery. Then Excel is used to create a frequency table and histogra
Excel Activity #4: Description:
Using Excel to Find the Mean and Standard Deviation from a Frequency Distribution
This lesson teaches the student more about using formulas in Excel by entering formulas into the spreadsheet to compute the mean and standard
Excel Activity #3: Description:
Investigating Mean, Median, Mode, and Standard Deviation
This lesson uses Excel to investigate several properties of the mean, median, mode and standard deviation. It investigates situations where the median is preferred ov
Excel Activity #2: Description:
Using Excel to Perform Statistical Functions and Formulas
This lesson investigates the use of statistical functions and mathematical formulas. The functions AVERAGE, MEDIAN, MODE, MIN, MAX, and STDEV are used along with use
Excel Activity #1: Description:
Creating a Bar Graph and Pie Chart
This lesson begins by having the students review the process of creating a frequency distribution for a sample of ages of people arrested in Volusia County. Excel is then used to create a
Arithmetic Drill
Practicing Arithmetic
Name:_ Find all the factors of the number. 1) 30 A) 5, 6, 10, 30 C) 1, 2, 3, 5, 6, 10, 15, 30 2) 27 A) 1, 3, 9
B) 1, 2, 3, 5, 6, 10, 20, 30 D) 1, 5, 6, 30
B) 3, 13, 27
C) 1, 3, 9, 27
D) 3, 9, 27
Write the number as t
Arithmetic Drill
Practicing Arithmetic
Name:_ Find all the factors of the number. 1) 30 A) 5, 6, 10, 30 C) 1, 2, 3, 5, 6, 10, 15, 30 2) 27 A) 1, 3, 9
B) 1, 2, 3, 5, 6, 10, 20, 30 D) 1, 5, 6, 30
B) 3, 13, 27
C) 1, 3, 9, 27
D) 3, 9, 27
Write the number as t
Arithmetic Drill
Practicing Arithmetic
Name:_ Find all the factors of the number. 1) 42 A) 7, 6, 14, 42 C) 1, 2, 3, 6, 7, 14, 21, 42 2) 27 A) 1, 3, 9
B) 1, 2, 3, 6, 7, 14, 28, 42 D) 1, 7, 6, 42
B) 3, 13, 27
C) 1, 3, 9, 27
D) 3, 9, 27
Write the number as t
Management 61 Exercises: Descriptive Statistics
1. Use the following data to construct a frequency distribution table with the following columns Class limits class boundaries Tally Frequency Class marks relative frequency f(x) 5.0 0.5 5.5 8.0 2. 4.5 4.0 5
CONTIG
by F. W. Broadbent in the May 1972 issue of The Arithmetic Teacher Contig is a game that intermediate-grade children love to play, but can be enjoyed by high school algebra students as well. I have also used the game in my computer science classes
Chapter Two Organizing and Summarizing Data
2.1 Organizing Qualitative Data
When data is collected from a survey or designed experiment, they must be organized into a manageable form. Data that is not organized is referred to as raw data.
Ways to Organize
Section 1-1Writing Expressions and Equations Background: 1. An algebraic expression can contain numbers, variables, powers, and operations (addition, subtraction, multiplication, and division), but NO equal sign. For example: 3x + 4 5x 6xy x-y
2. A numeri
Basic Algebra 1,2
Assessment 1-1, 1-2, 1-4
Name
/24 total
Write an algebraic expression for each verbal expression. (3 pts each) 1. The quotient of t and 8. 2. V increased by 11. 3. Six more than the product of 5 and k. Write an equation for each verbal e
Basic Algebra 1, 2
Assessment 1-1, 1-2, 1-4
Name
/83 total
Write an algebraic expression for each verbal expression. (3 pts each) 1. The quotient of t and 8. 2. V increased by 11. 3. Six more than the product of 5 and k. Write an equation for each verbal
The Distributive Property allows you to multiply each number inside a set of parenthesis by a factor outside the parenthesis and find the sum or difference of the resulting products. To distribute means to separate or break apart and then dispense evenly.
MULTIPLYING
MONOMIALS TIMES POLYNOMIALS (DISTRIBUTIVE PROPERTY)
Problem 1
8(Y + 4)
Problem 2
9(3A - 5)
Problem 3
C(C - 7)
Problem 4
Z(Z + 15)
Problem 5
2Y(Y + 8)
Problem 6
3P(P - 11)
Problem 7
7A(A - 4B)
Problem 8
3D(D + 2G)
Problem 9
-5Z(3Y + 4Z)
Problem
Distributive Property
2-7-2
Distributive Property
To illustrate the distributive property look at the problem 3(2x-7). This problem says 3 times 2x-7
or 3 of (2x-7).
Multiplying by 3 means add 2x-7 over and over. 2x-7+2x-7+2x-7 Simplify this by using t
Objective
The student will be able to: use the distributive property to simplify expressions. SOL: A.3
Designed by Skip Tyler, Varina High School and Nicole Kessinger, Deep Run High School
The Distributive Property
The process of distributing the number o