10/5/2017
Section 4.1
Sec on 4.1
Due Monday by 11:59pm
Points 5
Submitting a file upload
This is similar to #2:
Without using a calculator, test 853,908 for divisibility by 2, 3, 4, 5, 6, 8, 9, 10, and 11. Be sure to show your work to justify your
answer
10/2/2017
Section 2.3 HomeworkJaci Kimbro
Student: Jaci Kimbro
Date: 10/2/17
Instructor: Sara Cooper
Course: MATH 1350 online
Assignment: Section 2.3 Homework
Of the eighth graders at the Paxton School, 16 played basketball, 9 played volleyball, 10 playe
10/5/2017
Section 4.2
Submit Assignment
Sec on 4.2
Due Monday by 11:59pm
Points 5
Submitting a file upload
Similar to #2
Use a factor tree to find the prime factorization of 2205.
https:/nctc.instructure.com/courses/21541/assignments/347424
1/1
10/2/2017
Section 2.3 HomeworkJaci Kimbro
Student: Jaci Kimbro
Date: 10/2/17
Instructor: Sara Cooper
Course: MATH 1350 online
Assignment: Section 2.3 Homework
In a fraternity with 41 members, 18 take mathematics, 5 take both mathematics and physics, and
10/2/2017
Student: Jaci Kimbro
Date: 10/2/17
Section 3.1 HomeworkJaci Kimbro
Instructor: Sara Cooper
Course: MATH 1350 online
Assignment: Section 3.1 Homework
If the cornerstone represents when a building was built and it reads MDCCCLXXVI, when was the b
10/2/2017
Section 1.1 HomeworkJaci Kimbro
Student: Jaci Kimbro
Date: 10/2/17
Instructor: Sara Cooper
Course: MATH 1350 online
Assignment: Section 1.1 Homework
Use the approach in Gauss's problem to find the sums of the arithmetic sequences below (do not
10/2/2017
Section 1.1 HomeworkJaci Kimbro
Student: Jaci Kimbro
Date: 10/2/17
Instructor: Sara Cooper
Course: MATH 1350 online
Assignment: Section 1.1 Homework
Use Gauss's approach to find the following sums (do not use formulas).
a. 1 + 2 + 3 + 4 + . + 9
10/2/2017
Student: Jaci Kimbro
Date: 10/2/17
Section 2.3 HomeworkJaci Kimbro
Instructor: Sara Cooper
Course: MATH 1350 online
In a survey of 1120 investors, it was determined that
690 invested in stocks, 615 in bonds and 330 in both stocks
and bonds.
a.
10/2/2017
Section 1.2 HomeworkJaci Kimbro
Student: Jaci Kimbro
Date: 10/2/17
Instructor: Sara Cooper
Course: MATH 1350 online
Assignment: Section 1.2 Homework
Find the first five terms in sequences with the following nth terms.
2
a. 3n + 1
b. 7n + 5
n
c.
Chapter 2: Tables and Graphs
Section 2.1: Qualitative variables
Once we have a data set, we need a way to
summarize the data.
One way of doing this is to create tables and
graphs.
A graph or table can be made for each variable.
1
Labeling Tables and Gr
Chapter 4: Relationships Between Variables
Section 4.1: Scatterplots and Correlation
Bivariate data is when the data set consists of
two variables measured on each individual in
the sample or population.
The explanatory variable is the one a
researcher th
Chapter 1: Definitions and Data Collecting
Section 1.1
Statistics as a subject is the science of
collecting and analyzing information to
draw conclusions or answer questions.
A researcher first formulates a research
objective.
This should be detailed as t
Chapter 3: Numerical Measures
Numerical measures are values calculated
from a data set (statistics and
parameters).
You will learn how to calculate values, and
also what they mean to the data set.
1
Section 3.1
Measures of Center
Measures of center find
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Every fifth adult entering an airport is selected for additional security screening. What
A probability # has to be between 0 and 1
If 2 events are DISJOINT they cannot happen at the same time
If RESIDUAL is positive, the observed value is larger than the predicted,
and the individual is above average.
To extrapolate when doing least
squar
Binomial Probabilities
This can be a very confusing topic, but it does make a decent amount of sense if you see it from
a good perspective. First off, our book defines a binomial experiment as any experiment that
satisfies 4 conditions. The good news is w
5.3 Independence and the Multiplication Rule
5.3 Independence and the Multiplication Rul
In the previous sections of this chapter we discussed events in terms of word or for example, What is
the probability of drawing a king or diamond? Now we will discus
2.1 Frequency Distribution
To express data as percentages we construct a relative frequency distribution.
Definition: relative frequency= frequency/sum of all frequencies
Democratic
Republican
Independent
Frequency
14
6
14
Relative Frequency
14/34=41
6/34
1.4 Other Effective Sampling Methods
There are four methods of obtaining random samples. We have already discussed
simple random sampling. There are three other sampling methods (a) Stratified
Sample (b) Systematic Sample (c) Cluster Sample
Mutual Exclusi
Lecture notes:
Chapter 1: Data Collection
1.1: Intro to the Practice of Statistics
Statistical Thinking: To think statistically means one can understand large amounts of
data and information by applying mathematical formulas.
These formulas can help us un
3.2 Measures of Dispersion
M=80% and SD=10%
Formula= subtract the SD from left and Add to righ
According to the Empirical Rule 68% of people made (70,90) (1 SD)
95% of people made (60,100) (2 SD)
99.7 of people made (50, 110) (3 SD)
Definition: Zscore is
1.4 Other Effective Sampling Methods
There are four methods of obtaining random samples. We have already discussed
simple random sampling. There are three other sampling methods (a) Stratified Sample
(b) Systematic Sample (c) Cluster Sample
Mutual Exclusi
2.2 Organizing Quantitative Data: The Popular Displays
Recall: Quantitative variables are two different types, discrete and continuous data.
To organize discrete and continuous date we construct something similar to a bar
graph called a histogram.
Definit
3.3 Measures of Tendency and Dispersion from Grouped Data
Calculator Instructions
Stat
Edit
Enter mid points of column 1 in L1 and column 2 in L2
Stat, Calc, 1 Vars Stat
Enter L1 comma L2 and press enter
Standard Deviation for grouped data:
Standard devia
1.3 Simple Random Sampling
When collecting data for a sample from a population we must be fair as possible and select
individuals by chance. For example : Suppose a TV host with a nationwide audience asks
the audience to call in for a A or B response to s
Population variance (o^2) equals sum ( each x squared divided by N) minus (sum of x divided by N)
Population mean = = X / N
OR
Sample mean = x = x / n
interquartile range is equal to Q3 minus Q1.
Population Variance 2 = ( Xi  )2 / N
Sample Variance s2 =
Elem Statistics
 Review #1
 Sections 1.1
 3.2
Name_
1) Which of the following is not true of statistics?
A) Statistics involves collecting and summarizing data.
B) Statistics is used to draw conclusions using data.
C) Statistics can be used to organize