Frequency Distribution
Table that shows classes or intervals of data entries with a count of the number of
entries in each class
Lower Class Limit
Least number that can belong to a class
Upper Class Limit
Greatest number that can belong to a class
Class W
Lesson 6
NYS COMMON CORE MATHEMATICS CURRICULUM
86
Lesson 6: Scatter Plots
Classwork
Example 1
A bivariate data set consists of observations on two variables. For example, you might collect data on
car models. Each observation in the data set would consis
Spread
Where the numbers start and end Ex: 6-18
4 steps for a Histogram
Shape: symmetric, skewed to right, left
Center: what # or between what #'s
Spread: from what # to #
Outliers: are there any?
Steps to timeplot
Trend: long term upwards or downwards
Cy
Distribution is known as the
Bell curve or the Gaussian.
Approximately normally distributed variables
A continuous variable can assume all values between any tow give values of the variable.
Normal distribution
If a random variable has a probability distr
What are the two main subdivisions in statistics?
Descriptive and Inferential Statistics
Descriptive Statistics
Organize and summarize data using tables, graphs and averages
Inferential statistics
A way of generalizing beyond available observations
Types
Statistics
is the science of collecting, organizing, analyzing, and interpreting data in order to make
decisions
Descriptive statistics
reporting the results- conclusions are informal
Inferential Statistics
Conclusions are formal-backed by statement of co
Rare Event Rule For Inferential Statistics
If, under a given assumption, the probability of a particular observed event is extremely
small, we conclude that the assumption is probably not correct.
Event
Any collection of results or outcomes of a procedure
Murders, x
258
264
402
253
111
648
288
654
256
60
590
Population (in 100s of thousands), y
4
6
9
6
3
29
15
38
20
6
81
R=
R^2 =
0.7275
0.5292
Acre s burne d (M illions)
Using the Table below, conduct a hypothesis test or correlation and write the regressio
Since the population is always larger than the sample, the value of the sample mean
Selected Answer:
Correct1. could be larger, equal to, or smaller than the true value of the population
mean
Answers:
Correct1. could be larger, equal to, or smaller than t
The mean of a sample is?
Computed by summing all the data values and dividing the sum by the number of items
Since the population is always larger than the sample, the value of the sample mean
Could be larger, equal to, or smaller than the true value of t
Of the last 100 customers entering a computer shop, 25 have purchased a computer. If
the classical method for computing probability is used, the probability that the next
customer will purchase a computer is
Selected Answer:
Correct3. 0.50
Answers:
1. 0.2
The set of measurements collected for a particular element
Observations
A characteristic of interest for the elements is called a(n)
variable
All the data collected in a particular study are reffered to as the
data set
In a data set, the number of observa
Data that provide labels or names for groupings of like items are known as
Selected Answer:
Correct3. categorical data
Answers:
1. generic data
2. label data
Correct3. categorical data
4. quantitative data
categorical data
Qualitative data can be graphica
Statistical studies in which researchers control variables of interest are
experimental studies
The collection of all elements of interest in a particular study is
population
The owner of a factory regularly requests a graphical summary of all employees'
A(n) _ is a graph of a cumulative distribution.
Selected Answer:
Incorrect3. stem-and-leaf display
Answers:
1. pie chart
Correct2. ogive
3. stem-and-leaf display
4. histogram
ogive
A graphical device for depicting qualitative data that have been summarize
The average age in a sample of 90 students at City College is 20. As a result of this
sample, it can be concluded that the average age of all students at City College?
Could be larger, smaller, or equal to 20
A sample of five Fortune 500 companies showed
Statistics Checkpoint Assignment #4
(Version B)
Directions:
Do not place any solutions on the actual checkpoint assignment paper.
Show all work and solutions on your own notebook paper.
Only write on the front side of the notebook paper.
Use plenty of
Students Last Name 1
Students Name
Professors Name
Subject
DD MM YYYY
Trouble in Paradise?
The Case
Nickelodeons parent company, Viacom International, plans to build a 400-hectare
underwater theme park and resort in Palawan[Yve17], an island known for its
Statistics Checkpoint Assignment #1
(Version B)
Directions:
Watch the Checkpoint Assignment #1 Overview Video This is worth 50 points on the assignment.
Do not place any solutions on the actual checkpoint assignment paper.
Show all work and solutions o
Calvin Cycle Overview
The 5 G3P are
rearranged into 3
RuBP. RuBP can
either accept more
CO2 or exit the
Calvin Cycle to
become a sugar
CO2 is attached to
RuBP results in
the production of 2
3-carbon sugars
The two 3-carbon
sugars are
rearranged (using
ATP
Quick Quiz: 5-minute Stress Test
What's Your Stress Index?1
Find your stress level right now by completing this test.
DO YOU FREQUENTLY:
YES
NO
Neglect your diet?
Try to do everything yourself?
Blow up easily?
Seek unrealistic goals?
Fail to see the humou
STAT 1222 HOMEWORK 2
Last Name: _
First Name: _
Due date: Feb 9,2017
Problems 1 and 2 pertain to the following situation.
The 40 employees of a small company are classified by gender and education as follows.
College Graduate
Not a College Graduate
Male
7
Final Exam Study Guide
Evolution
Evolution refers to change. What type of change does this specifically refer to?
What is microevolution?
What is macroevolution?
Be able to describe the four (4) types of evidence for evolutionary change:
o Direct observat
Sec 1.3 Properties of Exponents
Properties of Exponents
Section 1.3
A. The Properties of Exponents
Exponential Notation
b n b
b
b
b
,
Ex :
34 3 3 3 3 81
n times
Common Rules of Exponents (see page 25)
x a x b x a b
(Product Rule)
x
(Quotient Rule)
x
STAT 1222
Spring 2017
Exam 1
Feb 14, 2017
Last Name:
Part I:
First Name:
_
Student ID #
Multiple Choice Questions
This part consists of 16 multiple choice questions worth a total of 80 points. Each
question is worthy 5 points. Mark only one answer, otherw
BIOL 1110
Final Review
Brief Overview:
Time limit: 2 hours and 30 minutes
Format: 100 Multiple choice and/or Matching
(25% from the new material/75% from the old exams)
What you need to bring: Pencil(s) and your UNCC ID
Remember there are no make-up exams
Which conferences or symposia are you most interested in attending and why? (max 100 words)
The symposium that interests me the most would be Themed Joint Session 1: Improving
Communication of Threats to the Public. As a student pursuing a Meteorology deg
NewtonsLawscontinued
Friction, Inclined Planes, N.T.L.
TWOtypesofFriction
Static Friction that keeps an object at rest
and prevents it from moving
Kinetic Friction that acts during motion
ForceofFriction
The Force of Friction is F f FN
= constant of prop
Physics 1101
pre-lecture #20
Rotational kinematics
Instructions
1- Read your text book (Ch 7, sections 7.1, 7.2, 7.3)
2- View the lecture video # 20 (on Moodle) and answer the associated quiz (web assign).
Polar coordinates
When moving linearly in one dim
A person in a boat throws a ball horizontally
A firecracker explodes in the air
Two people on ice skates push off from each other.
An apple hits the ground